Show the CPU and RAM usage per binary

[FranklinYu]

This is a feature request.

The requirement is described in this Unix.SE question. In other words, it would be nice to group the RAM and CPU usage by binary for multi-process applications, such as Chrome.

An answer below mentioned atop, which works for me, but I’m used to the interactive features of htop.

[FranklinYu]

Another idea is that, in the tree view, optionally show the total CPU and RAM when a node is collapsed. This idea was mentioned in https://superuser.com/questions/866007/memory-usage-grouped-by-parent-process.

[fasterit]

Duplicate of #301

[FranklinYu]

Thanks. After reading #301 and #1154, I decided that #1154 might works better for me, as it covers more edge-cases, such as child processes with different binaries. I’ll follow #1154 instead.