forked from netdata/netdata
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathdashboard_info.js
6376 lines (5430 loc) · 334 KB
/
dashboard_info.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// SPDX-License-Identifier: GPL-3.0-or-later
// Codacy declarations
/* global NETDATA */
var netdataDashboard = window.netdataDashboard || {};
// Informational content for the various sections of the GUI (menus, sections, charts, etc.)
// ----------------------------------------------------------------------------
// Menus
netdataDashboard.menu = {
'system': {
title: 'System Overview',
icon: '<i class="fas fa-bookmark"></i>',
info: 'Overview of the key system metrics.'
},
'services': {
title: 'systemd Services',
icon: '<i class="fas fa-cogs"></i>',
info: 'Resources utilization of systemd services. '+
'Netdata monitors all systemd services via '+
'<a href="https://en.wikipedia.org/wiki/Cgroups" target="_blank">cgroups</a> ' +
'(the resources accounting used by containers).'
},
'ap': {
title: 'Access Points',
icon: '<i class="fas fa-wifi"></i>',
info: 'Performance metrics for the access points (i.e. wireless interfaces in AP mode) found on the system.'
},
'tc': {
title: 'Quality of Service',
icon: '<i class="fas fa-globe"></i>',
info: 'Netdata collects and visualizes <code>tc</code> class utilization using its ' +
'<a href="https://github.com/netdata/netdata/blob/master/collectors/tc.plugin/tc-qos-helper.sh.in" target="_blank">tc-helper plugin</a>. ' +
'If you also use <a href="http://firehol.org/#fireqos" target="_blank">FireQOS</a> for setting up QoS, ' +
'netdata automatically collects interface and class names. If your QoS configuration includes overheads ' +
'calculation, the values shown here will include these overheads (the total bandwidth for the same ' +
'interface as reported in the Network Interfaces section, will be lower than the total bandwidth ' +
'reported here). QoS data collection may have a slight time difference compared to the interface ' +
'(QoS data collection uses a BASH script, so a shift in data collection of a few milliseconds ' +
'should be justified).'
},
'net': {
title: 'Network Interfaces',
icon: '<i class="fas fa-sitemap"></i>',
info: '<p>Performance <a href="https://www.kernel.org/doc/html/latest/networking/statistics.html" target="_blank">metrics for network interfaces</a>.</p>'+
'<p>Netdata retrieves this data reading the <code>/proc/net/dev</code> file and <code>/sys/class/net/</code> directory.</p>'
},
'Infiniband': {
title: 'Infiniband ports',
icon: '<i class="fas fa-sitemap"></i>',
info: '<p>Performance and exception statistics for '+
'<a href="https://en.wikipedia.org/wiki/InfiniBand" target="_blank">Infiniband</a> ports. '+
'The individual port and hardware counter descriptions can be found in the '+
'<a href="https://community.mellanox.com/s/article/understanding-mlx5-linux-counters-and-status-parameters" target="_blank">Mellanox knowledge base</a>.'
},
'wireless': {
title: 'Wireless Interfaces',
icon: '<i class="fas fa-wifi"></i>',
info: 'Performance metrics for wireless interfaces.'
},
'ip': {
title: 'Networking Stack',
icon: '<i class="fas fa-cloud"></i>',
info: function (os) {
if (os === "linux")
return 'Metrics for the networking stack of the system. These metrics are collected from <code>/proc/net/netstat</code> or attaching <code>kprobes</code> to kernel functions, apply to both IPv4 and IPv6 traffic and are related to operation of the kernel networking stack.';
else
return 'Metrics for the networking stack of the system.';
}
},
'ipv4': {
title: 'IPv4 Networking',
icon: '<i class="fas fa-cloud"></i>',
info: 'Metrics for the IPv4 stack of the system. ' +
'<a href="https://en.wikipedia.org/wiki/IPv4" target="_blank">Internet Protocol version 4 (IPv4)</a> is ' +
'the fourth version of the Internet Protocol (IP). It is one of the core protocols of standards-based ' +
'internetworking methods in the Internet. IPv4 is a connectionless protocol for use on packet-switched ' +
'networks. It operates on a best effort delivery model, in that it does not guarantee delivery, nor does ' +
'it assure proper sequencing or avoidance of duplicate delivery. These aspects, including data integrity, ' +
'are addressed by an upper layer transport protocol, such as the Transmission Control Protocol (TCP).'
},
'ipv6': {
title: 'IPv6 Networking',
icon: '<i class="fas fa-cloud"></i>',
info: 'Metrics for the IPv6 stack of the system. <a href="https://en.wikipedia.org/wiki/IPv6" target="_blank">Internet Protocol version 6 (IPv6)</a> is the most recent version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet. IPv6 was developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated problem of IPv4 address exhaustion. IPv6 is intended to replace IPv4.'
},
'sctp': {
title: 'SCTP Networking',
icon: '<i class="fas fa-cloud"></i>',
info: '<p><a href="https://en.wikipedia.org/wiki/Stream_Control_Transmission_Protocol" target="_blank">Stream Control Transmission Protocol (SCTP)</a> '+
'is a computer network protocol which operates at the transport layer and serves a role similar to the popular '+
'protocols TCP and UDP. SCTP provides some of the features of both UDP and TCP: it is message-oriented like UDP '+
'and ensures reliable, in-sequence transport of messages with congestion control like TCP. '+
'It differs from those protocols by providing multi-homing and redundant paths to increase resilience and reliability.</p>'+
'<p>Netdata collects SCTP metrics reading the <code>/proc/net/sctp/snmp</code> file.</p>'
},
'ipvs': {
title: 'IP Virtual Server',
icon: '<i class="fas fa-eye"></i>',
info: '<p><a href="http://www.linuxvirtualserver.org/software/ipvs.html" target="_blank">IPVS (IP Virtual Server)</a> '+
'implements transport-layer load balancing inside the Linux kernel, so called Layer-4 switching. '+
'IPVS running on a host acts as a load balancer at the front of a cluster of real servers, '+
'it can direct requests for TCP/UDP based services to the real servers, '+
'and makes services of the real servers to appear as a virtual service on a single IP address.</p>'+
'<p>Netdata collects summary statistics, reading <code>/proc/net/ip_vs_stats</code>. '+
'To display the statistics information of services and their servers, run <code>ipvsadm -Ln --stats</code> '+
'or <code>ipvsadm -Ln --rate</code> for the rate statistics. '+
'For details, see <a href="https://linux.die.net/man/8/ipvsadm" target="_blank">ipvsadm(8)</a>.</p>'
},
'netfilter': {
title: 'Firewall (netfilter)',
icon: '<i class="fas fa-shield-alt"></i>',
info: 'Performance metrics of the netfilter components.'
},
'ipfw': {
title: 'Firewall (ipfw)',
icon: '<i class="fas fa-shield-alt"></i>',
info: 'Counters and memory usage for the ipfw rules.'
},
'cpu': {
title: 'CPUs',
icon: '<i class="fas fa-bolt"></i>',
info: 'Detailed information for each CPU of the system. A summary of the system for all CPUs can be found at the <a href="#menu_system">System Overview</a> section.'
},
'mem': {
title: 'Memory',
icon: '<i class="fas fa-microchip"></i>',
info: 'Detailed information about the memory management of the system.'
},
'disk': {
title: 'Disks',
icon: '<i class="fas fa-hdd"></i>',
info: 'Charts with performance information for all the system disks. Special care has been given to present disk performance metrics in a way compatible with <code>iostat -x</code>. netdata by default prevents rendering performance charts for individual partitions and unmounted virtual disks. Disabled charts can still be enabled by configuring the relative settings in the netdata configuration file.'
},
'mount': {
title: 'Mount Points',
icon: '<i class="fas fa-hdd"></i>',
info: ''
},
'mdstat': {
title: 'MD arrays',
icon: '<i class="fas fa-hdd"></i>',
info: '<p>RAID devices are virtual devices created from two or more real block devices. '+
'<a href="https://man7.org/linux/man-pages/man4/md.4.html" target="_blank">Linux Software RAID</a> devices are '+
'implemented through the md (Multiple Devices) device driver.</p>'+
'<p>Netdata monitors the current status of MD arrays reading <a href="https://raid.wiki.kernel.org/index.php/Mdstat" target="_blank">/proc/mdstat</a> and '+
'<code>/sys/block/%s/md/mismatch_cnt</code> files.</p>'
},
'sensors': {
title: 'Sensors',
icon: '<i class="fas fa-leaf"></i>',
info: 'Readings of the configured system sensors.'
},
'ipmi': {
title: 'IPMI',
icon: '<i class="fas fa-leaf"></i>',
info: 'The Intelligent Platform Management Interface (IPMI) is a set of computer interface specifications for an autonomous computer subsystem that provides management and monitoring capabilities independently of the host system\'s CPU, firmware (BIOS or UEFI) and operating system.'
},
'samba': {
title: 'Samba',
icon: '<i class="fas fa-folder-open"></i>',
info: 'Performance metrics of the Samba file share operations of this system. Samba is a implementation of Windows services, including Windows SMB protocol file shares.'
},
'nfsd': {
title: 'NFS Server',
icon: '<i class="fas fa-folder-open"></i>',
info: 'Performance metrics of the Network File Server. '+
'<a href="https://en.wikipedia.org/wiki/Network_File_System" target="_blank">NFS</a> '+
'is a distributed file system protocol, allowing a user on a client computer to access files over a network, '+
'much like local storage is accessed. '+
'NFS, like many other protocols, builds on the Open Network Computing Remote Procedure Call (ONC RPC) system.'
},
'nfs': {
title: 'NFS Client',
icon: '<i class="fas fa-folder-open"></i>',
info: 'Performance metrics of the '+
'<a href="https://en.wikipedia.org/wiki/Network_File_System" target="_blank">NFS</a> '+
'operations of this system, acting as an NFS client.'
},
'zfs': {
title: 'ZFS Cache',
icon: '<i class="fas fa-folder-open"></i>',
info: 'Performance metrics of the '+
'<a href="https://en.wikipedia.org/wiki/ZFS#Caching_mechanisms" target="_blank">ZFS ARC and L2ARC</a>. '+
'The following charts visualize all metrics reported by '+
'<a href="https://github.com/openzfs/zfs/blob/master/cmd/arcstat/arcstat.in" target="_blank">arcstat.py</a> and '+
'<a href="https://github.com/openzfs/zfs/blob/master/cmd/arc_summary/arc_summary3" target="_blank">arc_summary.py</a>.'
},
'zfspool': {
title: 'ZFS pools',
icon: '<i class="fas fa-database"></i>',
info: 'State of ZFS pools.'
},
'btrfs': {
title: 'BTRFS filesystem',
icon: '<i class="fas fa-folder-open"></i>',
info: 'Disk space metrics for the BTRFS filesystem.'
},
'apps': {
title: 'Applications',
icon: '<i class="fas fa-heartbeat"></i>',
info: 'Per application statistics are collected using '+
'<a href="https://learn.netdata.cloud/docs/agent/collectors/apps.plugin" target="_blank">apps.plugin</a>. '+
'This plugin walks through all processes and aggregates statistics for '+
'<a href="https://learn.netdata.cloud/docs/agent/collectors/apps.plugin#configuration" target="_blank">application groups</a>. '+
'The plugin also counts the resources of exited children. '+
'So for processes like shell scripts, the reported values include the resources used by the commands '+
'these scripts run within each timeframe.',
height: 1.5
},
'groups': {
title: 'User Groups',
icon: '<i class="fas fa-user"></i>',
info: 'Per user group statistics are collected using '+
'<a href="https://learn.netdata.cloud/docs/agent/collectors/apps.plugin" target="_blank">apps.plugin</a>. '+
'This plugin walks through all processes and aggregates statistics per user group. '+
'The plugin also counts the resources of exited children. '+
'So for processes like shell scripts, the reported values include the resources used by the commands '+
'these scripts run within each timeframe.',
height: 1.5
},
'users': {
title: 'Users',
icon: '<i class="fas fa-users"></i>',
info: 'Per user statistics are collected using '+
'<a href="https://learn.netdata.cloud/docs/agent/collectors/apps.plugin" target="_blank">apps.plugin</a>. '+
'This plugin walks through all processes and aggregates statistics per user. '+
'The plugin also counts the resources of exited children. '+
'So for processes like shell scripts, the reported values include the resources used by the commands '+
'these scripts run within each timeframe.',
height: 1.5
},
'netdata': {
title: 'Netdata Monitoring',
icon: '<i class="fas fa-chart-bar"></i>',
info: 'Performance metrics for the operation of netdata itself and its plugins.'
},
'aclk_test': {
title: 'ACLK Test Generator',
info: 'For internal use to perform integration testing.'
},
'example': {
title: 'Example Charts',
info: 'Example charts, demonstrating the external plugin architecture.'
},
'cgroup': {
title: '',
icon: '<i class="fas fa-th"></i>',
info: 'Container resource utilization metrics. Netdata reads this information from <b>cgroups</b> (abbreviated from <b>control groups</b>), a Linux kernel feature that limits and accounts resource usage (CPU, memory, disk I/O, network, etc.) of a collection of processes. <b>cgroups</b> together with <b>namespaces</b> (that offer isolation between processes) provide what we usually call: <b>containers</b>.'
},
'cgqemu': {
title: '',
icon: '<i class="fas fa-th-large"></i>',
info: 'QEMU virtual machine resource utilization metrics. QEMU (short for Quick Emulator) is a free and open-source hosted hypervisor that performs hardware virtualization.'
},
'fping': {
title: 'fping',
icon: '<i class="fas fa-exchange-alt"></i>',
info: 'Network latency statistics, via <b>fping</b>. <b>fping</b> is a program to send ICMP echo probes to network hosts, similar to <code>ping</code>, but much better performing when pinging multiple hosts. fping versions after 3.15 can be directly used as netdata plugins.'
},
'gearman': {
title: 'Gearman',
icon: '<i class="fas fa-tasks"></i>',
info: 'Gearman is a job server that allows you to do work in parallel, to load balance processing, and to call functions between languages.'
},
'ioping': {
title: 'ioping',
icon: '<i class="fas fa-exchange-alt"></i>',
info: 'Disk latency statistics, via <b>ioping</b>. <b>ioping</b> is a program to read/write data probes from/to a disk.'
},
'httpcheck': {
title: 'Http Check',
icon: '<i class="fas fa-heartbeat"></i>',
info: 'Web Service availability and latency monitoring using HTTP checks. This plugin is a specialized version of the port check plugin.'
},
'memcached': {
title: 'memcached',
icon: '<i class="fas fa-database"></i>',
info: 'Performance metrics for <b>memcached</b>. Memcached is a general-purpose distributed memory caching system. It is often used to speed up dynamic database-driven websites by caching data and objects in RAM to reduce the number of times an external data source (such as a database or API) must be read.'
},
'monit': {
title: 'monit',
icon: '<i class="fas fa-database"></i>',
info: 'Statuses of checks in <b>monit</b>. Monit is a utility for managing and monitoring processes, programs, files, directories and filesystems on a Unix system. Monit conducts automatic maintenance and repair and can execute meaningful causal actions in error situations.'
},
'mysql': {
title: 'MySQL',
icon: '<i class="fas fa-database"></i>',
info: 'Performance metrics for <b>mysql</b>, the open-source relational database management system (RDBMS).'
},
'postgres': {
title: 'Postgres',
icon: '<i class="fas fa-database"></i>',
info: 'Performance metrics for <b>PostgresSQL</b>, the object-relational database (ORDBMS).'
},
'redis': {
title: 'Redis',
icon: '<i class="fas fa-database"></i>',
info: 'Performance metrics for <b>redis</b>. Redis (REmote DIctionary Server) is a software project that implements data structure servers. It is open-source, networked, in-memory, and stores keys with optional durability.'
},
'rethinkdbs': {
title: 'RethinkDB',
icon: '<i class="fas fa-database"></i>',
info: 'Performance metrics for <b>rethinkdb</b>. RethinkDB is the first open-source scalable database built for realtime applications'
},
'retroshare': {
title: 'RetroShare',
icon: '<i class="fas fa-share-alt"></i>',
info: 'Performance metrics for <b>RetroShare</b>. RetroShare is open source software for encrypted filesharing, serverless email, instant messaging, online chat, and BBS, based on a friend-to-friend network built on GNU Privacy Guard (GPG).'
},
'riakkv': {
title: 'Riak KV',
icon: '<i class="fas fa-database"></i>',
info: 'Metrics for <b>Riak KV</b>, the distributed key-value store.'
},
'ipfs': {
title: 'IPFS',
icon: '<i class="fas fa-folder-open"></i>',
info: 'Performance metrics for the InterPlanetary File System (IPFS), a content-addressable, peer-to-peer hypermedia distribution protocol.'
},
'phpfpm': {
title: 'PHP-FPM',
icon: '<i class="fas fa-eye"></i>',
info: 'Performance metrics for <b>PHP-FPM</b>, an alternative FastCGI implementation for PHP.'
},
'pihole': {
title: 'Pi-hole',
icon: '<i class="fas fa-ban"></i>',
info: 'Metrics for <a href="https://pi-hole.net/" target="_blank">Pi-hole</a>, a black hole for Internet advertisements.' +
' The metrics returned by Pi-Hole API is all from the last 24 hours.'
},
'portcheck': {
title: 'Port Check',
icon: '<i class="fas fa-heartbeat"></i>',
info: 'Service availability and latency monitoring using port checks.'
},
'postfix': {
title: 'postfix',
icon: '<i class="fas fa-envelope"></i>',
info: undefined
},
'dovecot': {
title: 'Dovecot',
icon: '<i class="fas fa-envelope"></i>',
info: undefined
},
'hddtemp': {
title: 'HDD Temp',
icon: '<i class="fas fa-thermometer-half"></i>',
info: undefined
},
'nginx': {
title: 'nginx',
icon: '<i class="fas fa-eye"></i>',
info: undefined
},
'apache': {
title: 'Apache',
icon: '<i class="fas fa-eye"></i>',
info: undefined
},
'lighttpd': {
title: 'Lighttpd',
icon: '<i class="fas fa-eye"></i>',
info: undefined
},
'web_log': {
title: undefined,
icon: '<i class="fas fa-file-alt"></i>',
info: 'Information extracted from a server log file. <code>web_log</code> plugin incrementally parses the server log file to provide, in real-time, a break down of key server performance metrics. For web servers, an extended log file format may optionally be used (for <code>nginx</code> and <code>apache</code>) offering timing information and bandwidth for both requests and responses. <code>web_log</code> plugin may also be configured to provide a break down of requests per URL pattern (check <a href="https://github.com/netdata/netdata/blob/master/collectors/python.d.plugin/web_log/web_log.conf" target="_blank"><code>/etc/netdata/python.d/web_log.conf</code></a>).'
},
'named': {
title: 'named',
icon: '<i class="fas fa-tag"></i>',
info: undefined
},
'squid': {
title: 'squid',
icon: '<i class="fas fa-exchange-alt"></i>',
info: undefined
},
'nut': {
title: 'UPS',
icon: '<i class="fas fa-battery-half"></i>',
info: undefined
},
'apcupsd': {
title: 'UPS',
icon: '<i class="fas fa-battery-half"></i>',
info: undefined
},
'smawebbox': {
title: 'Solar Power',
icon: '<i class="fas fa-sun"></i>',
info: undefined
},
'fronius': {
title: 'Fronius',
icon: '<i class="fas fa-sun"></i>',
info: undefined
},
'stiebeleltron': {
title: 'Stiebel Eltron',
icon: '<i class="fas fa-thermometer-half"></i>',
info: undefined
},
'snmp': {
title: 'SNMP',
icon: '<i class="fas fa-random"></i>',
info: undefined
},
'go_expvar': {
title: 'Go - expvars',
icon: '<i class="fas fa-eye"></i>',
info: 'Statistics about running Go applications exposed by the <a href="https://golang.org/pkg/expvar/" target="_blank">expvar package</a>.'
},
'chrony': {
icon: '<i class="fas fa-clock"></i>',
info: 'chronyd parameters about the system’s clock performance.'
},
'couchdb': {
icon: '<i class="fas fa-database"></i>',
info: 'Performance metrics for <b><a href="https://couchdb.apache.org/" target="_blank">CouchDB</a></b>, the open-source, JSON document-based database with an HTTP API and multi-master replication.'
},
'beanstalk': {
title: 'Beanstalkd',
icon: '<i class="fas fa-tasks"></i>',
info: 'Provides statistics on the <b><a href="http://kr.github.io/beanstalkd/" target="_blank">beanstalkd</a></b> server and any tubes available on that server using data pulled from beanstalkc'
},
'rabbitmq': {
title: 'RabbitMQ',
icon: '<i class="fas fa-comments"></i>',
info: 'Performance data for the <b><a href="https://www.rabbitmq.com/" target="_blank">RabbitMQ</a></b> open-source message broker.'
},
'ceph': {
title: 'Ceph',
icon: '<i class="fas fa-database"></i>',
info: 'Provides statistics on the <b><a href="http://ceph.com/" target="_blank">ceph</a></b> cluster server, the open-source distributed storage system.'
},
'ntpd': {
title: 'ntpd',
icon: '<i class="fas fa-clock"></i>',
info: 'Provides statistics for the internal variables of the Network Time Protocol daemon <b><a href="http://www.ntp.org/" target="_blank">ntpd</a></b> and optional including the configured peers (if enabled in the module configuration). The module presents the performance metrics as shown by <b><a href="http://doc.ntp.org/current-stable/ntpq.html">ntpq</a></b> (the standard NTP query program) using NTP mode 6 UDP packets to communicate with the NTP server.'
},
'spigotmc': {
title: 'Spigot MC',
icon: '<i class="fas fa-eye"></i>',
info: 'Provides basic performance statistics for the <b><a href="https://www.spigotmc.org/" target="_blank">Spigot Minecraft</a></b> server.'
},
'unbound': {
title: 'Unbound',
icon: '<i class="fas fa-tag"></i>',
info: undefined
},
'boinc': {
title: 'BOINC',
icon: '<i class="fas fa-microchip"></i>',
info: 'Provides task counts for <b><a href="http://boinc.berkeley.edu/" target="_blank">BOINC</a></b> distributed computing clients.'
},
'w1sensor': {
title: '1-Wire Sensors',
icon: '<i class="fas fa-thermometer-half"></i>',
info: 'Data derived from <a href="https://en.wikipedia.org/wiki/1-Wire" target="_blank">1-Wire</a> sensors. Currently temperature sensors are automatically detected.'
},
'logind': {
title: 'Logind',
icon: '<i class="fas fa-user"></i>',
info: undefined
},
'powersupply': {
title: 'Power Supply',
icon: '<i class="fas fa-battery-half"></i>',
info: 'Statistics for the various system power supplies. Data collected from <a href="https://www.kernel.org/doc/Documentation/power/power_supply_class.txt" target="_blank">Linux power supply class</a>.'
},
'xenstat': {
title: 'Xen Node',
icon: '<i class="fas fa-server"></i>',
info: 'General statistics for the Xen node. Data collected using <b>xenstat</b> library</a>.'
},
'xendomain': {
title: '',
icon: '<i class="fas fa-th-large"></i>',
info: 'Xen domain resource utilization metrics. Netdata reads this information using <b>xenstat</b> library which gives access to the resource usage information (CPU, memory, disk I/O, network) for a virtual machine.'
},
'wmi': {
title: 'wmi',
icon: '<i class="fas fa-server"></i>',
info: undefined
},
'perf': {
title: 'Perf Counters',
icon: '<i class="fas fa-tachometer-alt"></i>',
info: 'Performance Monitoring Counters (PMC). Data collected using <b>perf_event_open()</b> system call which utilises Hardware Performance Monitoring Units (PMU).'
},
'vsphere': {
title: 'vSphere',
icon: '<i class="fas fa-server"></i>',
info: 'Performance statistics for ESXI hosts and virtual machines. Data collected from <a href="https://www.vmware.com/products/vcenter-server.html" target="_blank">VMware vCenter Server</a> using <code><a href="https://github.com/vmware/govmomi"> govmomi</a></code> library.'
},
'vcsa': {
title: 'VCSA',
icon: '<i class="fas fa-server"></i>',
info: 'vCenter Server Appliance health statistics. Data collected from <a href="https://vmware.github.io/vsphere-automation-sdk-rest/vsphere/index.html#SVC_com.vmware.appliance.health" target="_blank">Health API</a>.'
},
'zookeeper': {
title: 'Zookeeper',
icon: '<i class="fas fa-database"></i>',
info: 'Provides health statistics for <b><a href="https://zookeeper.apache.org/" target="_blank">Zookeeper</a></b> server. Data collected through the command port using <code><a href="https://zookeeper.apache.org/doc/r3.5.5/zookeeperAdmin.html#sc_zkCommands">mntr</a></code> command.'
},
'hdfs': {
title: 'HDFS',
icon: '<i class="fas fa-folder-open"></i>',
info: 'Provides <b><a href="https://hadoop.apache.org/docs/r3.2.0/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html" target="_blank">Hadoop Distributed File System</a></b> performance statistics. Module collects metrics over <code>Java Management Extensions</code> through the web interface of an <code>HDFS</code> daemon.'
},
'am2320': {
title: 'AM2320 Sensor',
icon: '<i class="fas fa-thermometer-half"></i>',
info: 'Readings from the external AM2320 Sensor.'
},
'scaleio': {
title: 'ScaleIO',
icon: '<i class="fas fa-database"></i>',
info: 'Performance and health statistics for various ScaleIO components. Data collected via VxFlex OS Gateway REST API.'
},
'squidlog': {
title: 'Squid log',
icon: '<i class="fas fa-file-alt"></i>',
info: undefined
},
'cockroachdb': {
title: 'CockroachDB',
icon: '<i class="fas fa-database"></i>',
info: 'Performance and health statistics for various <code>CockroachDB</code> components.'
},
'ebpf': {
title: 'eBPF',
icon: '<i class="fas fa-heartbeat"></i>',
info: 'Monitor system calls, internal functions, bytes read, bytes written and errors using <code>eBPF</code>.'
},
'filesystem': {
title: 'Filesystem',
icon: '<i class="fas fa-hdd"></i>',
},
'vernemq': {
title: 'VerneMQ',
icon: '<i class="fas fa-comments"></i>',
info: 'Performance data for the <b><a href="https://vernemq.com/" target="_blank">VerneMQ</a></b> open-source MQTT broker.'
},
'pulsar': {
title: 'Pulsar',
icon: '<i class="fas fa-comments"></i>',
info: 'Summary, namespaces and topics performance data for the <b><a href="http://pulsar.apache.org/" target="_blank">Apache Pulsar</a></b> pub-sub messaging system.'
},
'anomalies': {
title: 'Anomalies',
icon: '<i class="fas fa-flask"></i>',
info: 'Anomaly scores relating to key system metrics. A high anomaly probability indicates strange behaviour and may trigger an anomaly prediction from the trained models. Read the <a href="https://github.com/netdata/netdata/tree/master/collectors/python.d.plugin/anomalies" target="_blank">anomalies collector docs</a> for more details.'
},
'alarms': {
title: 'Alarms',
icon: '<i class="fas fa-bell"></i>',
info: 'Charts showing alarm status over time. More details <a href="https://github.com/netdata/netdata/blob/master/collectors/python.d.plugin/alarms/README.md" target="_blank">here</a>.'
},
'statsd': {
title: 'StatsD',
icon: '<i class="fas fa-chart-line"></i>',
info:'StatsD is an industry-standard technology stack for monitoring applications and instrumenting any piece of software to deliver custom metrics. Netdata allows the user to organize the metrics in different charts and visualize any application metric easily. Read more on <a href="https://learn.netdata.cloud/docs/agent/collectors/statsd.plugin" target="_blank">Netdata Learn</a>.'
},
'supervisord': {
title: 'Supervisord',
icon: '<i class="fas fa-tasks"></i>',
info: 'Detailed statistics for each group of processes controlled by <b><a href="http://supervisord.org/" target="_blank">Supervisor</a></b>. ' +
'Netdata collects these metrics using <a href="http://supervisord.org/api.html#supervisor.rpcinterface.SupervisorNamespaceRPCInterface.getAllProcessInfo" target="_blank"><code>getAllProcessInfo</code></a> method.'
},
'systemdunits': {
title: 'systemd units',
icon: '<i class="fas fa-cogs"></i>',
info: '<b>systemd</b> provides a dependency system between various entities called "units" of 11 different types. ' +
'Units encapsulate various objects that are relevant for system boot-up and maintenance. ' +
'Units may be <code>active</code> (meaning started, bound, plugged in, depending on the unit type), ' +
'or <code>inactive</code> (meaning stopped, unbound, unplugged), ' +
'as well as in the process of being activated or deactivated, i.e. between the two states (these states are called <code>activating</code>, <code>deactivating</code>). ' +
'A special <code>failed</code> state is available as well, which is very similar to <code>inactive</code> and is entered when the service failed in some way (process returned error code on exit, or crashed, an operation timed out, or after too many restarts). ' +
'For detailes, see <a href="https://www.freedesktop.org/software/systemd/man/systemd.html" target="_blank"> systemd(1)</a>.'
},
'changefinder': {
title: 'ChangeFinder',
icon: '<i class="fas fa-flask"></i>',
info: 'Online changepoint detection using machine learning. More details <a href="https://github.com/netdata/netdata/blob/master/collectors/python.d.plugin/changefinder/README.md" target="_blank">here</a>.'
},
'zscores': {
title: 'Z-Scores',
icon: '<i class="fas fa-exclamation"></i>',
info: 'Z scores scores relating to key system metrics.'
},
'anomaly_detection': {
title: 'Anomaly Detection',
icon: '<i class="fas fa-brain"></i>',
info: 'Charts relating to anomaly detection, increased <code>anomalous</code> dimensions or a higher than usual <code>anomaly_rate</code> could be signs of some abnormal behaviour. Read our <a href="https://learn.netdata.cloud/guides/monitor/anomaly-detection" target="_blank">anomaly detection guide</a> for more details.'
},
};
// ----------------------------------------------------------------------------
// submenus
// information to be shown, just below each submenu
// information about the submenus
netdataDashboard.submenu = {
'web_log.squid_bandwidth': {
title: 'bandwidth',
info: 'Bandwidth of responses (<code>sent</code>) by squid. This chart may present unusual spikes, since the bandwidth is accounted at the time the log line is saved by the server, even if the time needed to serve it spans across a longer duration. We suggest to use QoS (e.g. <a href="http://firehol.org/#fireqos" target="_blank">FireQOS</a>) for accurate accounting of the server bandwidth.'
},
'web_log.squid_responses': {
title: 'responses',
info: 'Information related to the responses sent by squid.'
},
'web_log.squid_requests': {
title: 'requests',
info: 'Information related to the requests squid has received.'
},
'web_log.squid_hierarchy': {
title: 'hierarchy',
info: 'Performance metrics for the squid hierarchy used to serve the requests.'
},
'web_log.squid_squid_transport': {
title: 'transport'
},
'web_log.squid_squid_cache': {
title: 'cache',
info: 'Performance metrics for the performance of the squid cache.'
},
'web_log.squid_timings': {
title: 'timings',
info: 'Duration of squid requests. Unrealistic spikes may be reported, since squid logs the total time of the requests, when they complete. Especially for HTTPS, the clients get a tunnel from the proxy and exchange requests directly with the upstream servers, so squid cannot evaluate the individual requests and reports the total time the tunnel was open.'
},
'web_log.squid_clients': {
title: 'clients'
},
'web_log.bandwidth': {
info: 'Bandwidth of requests (<code>received</code>) and responses (<code>sent</code>). <code>received</code> requires an extended log format (without it, the web server log does not have this information). This chart may present unusual spikes, since the bandwidth is accounted at the time the log line is saved by the web server, even if the time needed to serve it spans across a longer duration. We suggest to use QoS (e.g. <a href="http://firehol.org/#fireqos" target="_blank">FireQOS</a>) for accurate accounting of the web server bandwidth.'
},
'web_log.urls': {
info: 'Number of requests for each <code>URL pattern</code> defined in <a href="https://github.com/netdata/netdata/blob/master/collectors/python.d.plugin/web_log/web_log.conf" target="_blank"><code>/etc/netdata/python.d/web_log.conf</code></a>. This chart counts all requests matching the URL patterns defined, independently of the web server response codes (i.e. both successful and unsuccessful).'
},
'web_log.clients': {
info: 'Charts showing the number of unique client IPs, accessing the web server.'
},
'web_log.timings': {
info: 'Web server response timings - the time the web server needed to prepare and respond to requests. This requires an extended log format and its meaning is web server specific. For most web servers this accounts the time from the reception of a complete request, to the dispatch of the last byte of the response. So, it includes the network delays of responses, but it does not include the network delays of requests.'
},
'mem.ksm': {
title: 'deduper (ksm)',
info: '<a href="https://en.wikipedia.org/wiki/Kernel_same-page_merging" target="_blank">Kernel Same-page Merging</a> '+
'(KSM) performance monitoring, read from several files in <code>/sys/kernel/mm/ksm/</code>. '+
'KSM is a memory-saving de-duplication feature in the Linux kernel. '+
'The KSM daemon ksmd periodically scans those areas of user memory which have been registered with it, '+
'looking for pages of identical content which can be replaced by a single write-protected page.'
},
'mem.hugepages': {
info: 'Hugepages is a feature that allows the kernel to utilize the multiple page size capabilities of modern hardware architectures. The kernel creates multiple pages of virtual memory, mapped from both physical RAM and swap. There is a mechanism in the CPU architecture called "Translation Lookaside Buffers" (TLB) to manage the mapping of virtual memory pages to actual physical memory addresses. The TLB is a limited hardware resource, so utilizing a large amount of physical memory with the default page size consumes the TLB and adds processing overhead. By utilizing Huge Pages, the kernel is able to create pages of much larger sizes, each page consuming a single resource in the TLB. Huge Pages are pinned to physical RAM and cannot be swapped/paged out.'
},
'mem.numa': {
info: 'Non-Uniform Memory Access (NUMA) is a hierarchical memory design the memory access time is dependent on locality. Under NUMA, a processor can access its own local memory faster than non-local memory (memory local to another processor or memory shared between processors). The individual metrics are described in the <a href="https://www.kernel.org/doc/Documentation/numastat.txt" target="_blank">Linux kernel documentation</a>.'
},
'mem.ecc': {
info: '<p><a href="https://en.wikipedia.org/wiki/ECC_memory" target="_blank">ECC memory</a> '+
'is a type of computer data storage that uses an error correction code (ECC) to detect '+
'and correct n-bit data corruption which occurs in memory. '+
'Typically, ECC memory maintains a memory system immune to single-bit errors: '+
'the data that is read from each word is always the same as the data that had been written to it, '+
'even if one of the bits actually stored has been flipped to the wrong state.</p>'+
'<p>Memory errors can be classified into two types: '+
'<b>Soft errors</b>, which randomly corrupt bits but do not leave physical damage. '+
'Soft errors are transient in nature and are not repeatable, can be because of electrical or '+
'magnetic interference. '+
'<b>Hard errors</b>, which corrupt bits in a repeatable manner because '+
'of a physical/hardware defect or an environmental problem.'
},
'mem.pagetype': {
info: 'Statistics of free memory available from '+
'<a href="https://en.wikipedia.org/wiki/Buddy_memory_allocation" target="_blank">memory buddy allocator</a>. '+
'The buddy allocator is the system memory allocator. '+
'The whole memory space is split in physical pages, which are grouped by '+
'NUMA node, zone, '+
'<a href="https://lwn.net/Articles/224254/" target="_blank">migrate type</a>, and size of the block. '+
'By keeping pages grouped based on their ability to move, '+
'the kernel can reclaim pages within a page block to satisfy a high-order allocation. '+
'When the kernel or an application requests some memory, the buddy allocator provides a page that matches closest the request.'
},
'ip.ecn': {
info: '<a href="https://en.wikipedia.org/wiki/Explicit_Congestion_Notification" target="_blank">Explicit Congestion Notification (ECN)</a> '+
'is an extension to the IP and to the TCP that allows end-to-end notification of network congestion without dropping packets. '+
'ECN is an optional feature that may be used between two ECN-enabled endpoints when '+
'the underlying network infrastructure also supports it.'
},
'ip.multicast': {
info: '<a href="https://en.wikipedia.org/wiki/Multicast" target="_blank">IP multicast</a> is a technique for '+
'one-to-many communication over an IP network. '+
'Multicast uses network infrastructure efficiently by requiring the source to send a packet only once, '+
'even if it needs to be delivered to a large number of receivers. '+
'The nodes in the network take care of replicating the packet to reach multiple receivers only when necessary.'
},
'ip.broadcast': {
info: 'In computer networking, '+
'<a href="https://en.wikipedia.org/wiki/Broadcasting_(networking)" target="_blank">broadcasting</a> refers to transmitting a packet that will be received by every device on the network. '+
'In practice, the scope of the broadcast is limited to a broadcast domain.'
},
'netfilter.conntrack': {
title: 'connection tracker',
info: 'Netfilter Connection Tracker performance metrics. The connection tracker keeps track of all connections of the machine, inbound and outbound. It works by keeping a database with all open connections, tracking network and address translation and connection expectations.'
},
'netfilter.nfacct': {
title: 'bandwidth accounting',
info: 'The following information is read using the <code>nfacct.plugin</code>.'
},
'netfilter.synproxy': {
title: 'DDoS protection',
info: 'DDoS protection performance metrics. <a href="https://github.com/firehol/firehol/wiki/Working-with-SYNPROXY" target="_blank">SYNPROXY</a> '+
'is a TCP SYN packets proxy. '+
'It is used to protect any TCP server (like a web server) from SYN floods and similar DDoS attacks. '+
'SYNPROXY intercepts new TCP connections and handles the initial 3-way handshake using syncookies '+
'instead of conntrack to establish the connection. '+
'It is optimized to handle millions of packets per second utilizing all CPUs available without '+
'any concurrency locking between the connections. '+
'It can be used for any kind of TCP traffic (even encrypted), '+
'since it does not interfere with the content itself.'
},
'ipfw.dynamic_rules': {
title: 'dynamic rules',
info: 'Number of dynamic rules, created by correspondent stateful firewall rules.'
},
'system.softnet_stat': {
title: 'softnet',
info: function (os) {
if (os === 'linux')
return '<p>Statistics for CPUs SoftIRQs related to network receive work. '+
'Break down per CPU core can be found at <a href="#menu_cpu_submenu_softnet_stat">CPU / softnet statistics</a>. '+
'More information about identifying and troubleshooting network driver related issues can be found at '+
'<a href="https://access.redhat.com/sites/default/files/attachments/20150325_network_performance_tuning.pdf" target="_blank">Red Hat Enterprise Linux Network Performance Tuning Guide</a>.</p>'+
'<p><b>Processed</b> - packets processed. '+
'<b>Dropped</b> - packets dropped because the network device backlog was full. '+
'<b>Squeezed</b> - number of times the network device budget was consumed or the time limit was reached, '+
'but more work was available. '+
'<b>ReceivedRPS</b> - number of times this CPU has been woken up to process packets via an Inter-processor Interrupt. '+
'<b>FlowLimitCount</b> - number of times the flow limit has been reached (flow limiting is an optional '+
'Receive Packet Steering feature).</p>';
else
return 'Statistics for CPUs SoftIRQs related to network receive work.';
}
},
'system.clock synchronization': {
info: '<a href="https://en.wikipedia.org/wiki/Network_Time_Protocol" target="_blank">NTP</a> '+
'lets you automatically sync your system time with a remote server. '+
'This keeps your machine’s time accurate by syncing with servers that are known to have accurate times.'
},
'cpu.softnet_stat': {
title: 'softnet',
info: function (os) {
if (os === 'linux')
return '<p>Statistics for CPUs SoftIRQs related to network receive work. '+
'Total for all CPU cores can be found at <a href="#menu_system_submenu_softnet_stat">System / softnet statistics</a>. '+
'More information about identifying and troubleshooting network driver related issues can be found at '+
'<a href="https://access.redhat.com/sites/default/files/attachments/20150325_network_performance_tuning.pdf" target="_blank">Red Hat Enterprise Linux Network Performance Tuning Guide</a>.</p>'+
'<p><b>Processed</b> - packets processed. '+
'<b>Dropped</b> - packets dropped because the network device backlog was full. '+
'<b>Squeezed</b> - number of times the network device budget was consumed or the time limit was reached, '+
'but more work was available. '+
'<b>ReceivedRPS</b> - number of times this CPU has been woken up to process packets via an Inter-processor Interrupt. '+
'<b>FlowLimitCount</b> - number of times the flow limit has been reached (flow limiting is an optional '+
'Receive Packet Steering feature).</p>';
else
return 'Statistics for per CPUs core SoftIRQs related to network receive work. Total for all CPU cores can be found at <a href="#menu_system_submenu_softnet_stat">System / softnet statistics</a>.';
}
},
'go_expvar.memstats': {
title: 'memory statistics',
info: 'Go runtime memory statistics. See <a href="https://golang.org/pkg/runtime/#MemStats" target="_blank">runtime.MemStats</a> documentation for more info about each chart and the values.'
},
'couchdb.dbactivity': {
title: 'db activity',
info: 'Overall database reads and writes for the entire server. This includes any external HTTP traffic, as well as internal replication traffic performed in a cluster to ensure node consistency.'
},
'couchdb.httptraffic': {
title: 'http traffic breakdown',
info: 'All HTTP traffic, broken down by type of request (<tt>GET</tt>, <tt>PUT</tt>, <tt>POST</tt>, etc.) and response status code (<tt>200</tt>, <tt>201</tt>, <tt>4xx</tt>, etc.)<br/><br/>Any <tt>5xx</tt> errors here indicate a likely CouchDB bug; check the logfile for further information.'
},
'couchdb.ops': {
title: 'server operations'
},
'couchdb.perdbstats': {
title: 'per db statistics',
info: 'Statistics per database. This includes <a href="http://docs.couchdb.org/en/latest/api/database/common.html#get--db" target="_blank">3 size graphs per database</a>: active (the size of live data in the database), external (the uncompressed size of the database contents), and file (the size of the file on disk, exclusive of any views and indexes). It also includes the number of documents and number of deleted documents per database.'
},
'couchdb.erlang': {
title: 'erlang statistics',
info: 'Detailed information about the status of the Erlang VM that hosts CouchDB. These are intended for advanced users only. High values of the peak message queue (>10e6) generally indicate an overload condition.'
},
'ntpd.system': {
title: 'system',
info: 'Statistics of the system variables as shown by the readlist billboard <code>ntpq -c rl</code>. System variables are assigned an association ID of zero and can also be shown in the readvar billboard <code>ntpq -c "rv 0"</code>. These variables are used in the <a href="http://doc.ntp.org/current-stable/discipline.html" target="_blank">Clock Discipline Algorithm</a>, to calculate the lowest and most stable offset.'
},
'ntpd.peers': {
title: 'peers',
info: 'Statistics of the peer variables for each peer configured in <code>/etc/ntp.conf</code> as shown by the readvar billboard <code>ntpq -c "rv <association>"</code>, while each peer is assigned a nonzero association ID as shown by <code>ntpq -c "apeers"</code>. The module periodically scans for new/changed peers (default: every 60s). <b>ntpd</b> selects the best possible peer from the available peers to synchronize the clock. A minimum of at least 3 peers is required to properly identify the best possible peer.'
},
'mem.page_cache': {
title: 'page cache (eBPF)',
info: 'Monitor calls to functions used to manipulate <a href="https://en.wikipedia.org/wiki/Page_cache" target="_blank">Linux page cache</a>. When integration with apps is <a href="https://learn.netdata.cloud/guides/troubleshoot/monitor-debug-applications-ebpf" target="_blank">enabled</a>, Netdata also shows page cache manipulation per <a href="#menu_apps_submenu_page_cache">application</a>.'
},
'apps.page_cache': {
title: 'page cache (eBPF)',
info: 'Netdata also gives a summary for these charts in <a href="#menu_mem_submenu_page_cache">Memory submenu</a>.'
},
'filesystem.vfs': {
title: 'vfs (eBPF)',
info: 'Monitor calls to functions used to manipulate <a href="https://learn.netdata.cloud/docs/agent/collectors/ebpf.plugin#vfs" target="_blank">File Systems</a>. When integration with apps is <a href="https://learn.netdata.cloud/guides/troubleshoot/monitor-debug-applications-ebpf" target="_blank">enabled</a>, Netdata also shows Virtual File System per <a href="#menu_apps_submenu_vfs">application</a>.'
},
'apps.vfs': {
title: 'vfs (eBPF)',
info: 'Netdata also gives a summary for these charts in <a href="#menu_filesystem_submenu_vfs">Filesystem submenu</a>.'
},
'filesystem.ext4_latency': {
title: 'ext4 latency (eBPF)',
info: 'Latency is the time it takes for an event to be completed. We calculate the difference between the calling and return times, this spans disk I/O, file system operations (lock, I/O), run queue latency and all events related to the monitored action. Based on the eBPF <a href="http://www.brendangregg.com/blog/2016-10-06/linux-bcc-ext4dist-ext4slower.html" target="_blank">ext4dist</a> from BCC tools.'
},
'filesystem.xfs_latency': {
title: 'xfs latency (eBPF)',
info: 'Latency is the time it takes for an event to be completed. We calculate the difference between the calling and return times, this spans disk I/O, file system operations (lock, I/O), run queue latency and all events related to the monitored action. Based on the eBPF <a href="https://github.com/iovisor/bcc/blob/master/tools/xfsdist_example.txt" target="_blank">xfsdist</a> from BCC tools.'
},
'filesystem.nfs_latency': {
title: 'nfs latency (eBPF)',
info: 'Latency is the time it takes for an event to be completed. We calculate the difference between the calling and return times, this spans disk I/O, file system operations (lock, I/O), run queue latency and all events related to the monitored action. Based on the eBPF <a href="https://github.com/iovisor/bcc/blob/master/tools/nfsdist_example.txt" target="_blank">nfsdist</a> from BCC tools.'
},
'filesystem.zfs_latency': {
title: 'zfs latency (eBPF)',
info: 'Latency is the time it takes for an event to be completed. We calculate the difference between the calling and return times, this spans disk I/O, file system operations (lock, I/O), run queue latency and all events related to the monitored action. Based on the eBPF <a href="https://github.com/iovisor/bcc/blob/master/tools/zfsdist_example.txt" target="_blank">zfsdist</a> from BCC tools.'
},
'filesystem.btrfs_latency': {
title: 'btrfs latency (eBPF)',
info: 'Latency is the time it takes for an event to be completed. We calculate the difference between the calling and return times, we get the logarithmic for the final result and we sum one value to the respective bin. Based on the eBPF <a href="https://github.com/iovisor/bcc/blob/master/tools/btrfsdist_example.txt" target="_blank">btrfsdist</a> from BCC tools.'
},
'filesystem.file_access': {
title: 'file access (eBPF)',
info: 'When integration with apps is <a href="https://learn.netdata.cloud/guides/troubleshoot/monitor-debug-applications-ebpf" target="_blank">enabled</a>, Netdata also shows file access per <a href="#menu_apps_submenu_file_access">application</a>.'
},
'apps.file_access': {
title: 'file access (eBPF)',
info: 'Netdata also gives a summary for this chart on <a href="#menu_filesystem_submenu_file_access">Filesystem submenu</a> (more details on <a href="https://learn.netdata.cloud/docs/agent/collectors/ebpf.plugin#file" target="_blank">eBPF plugin file chart section</a>).'
},