checkpoint postgres: add a shallow checkpointer #1308
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1 warning and 2 notices
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benchmark
ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636
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Benchmark results:
libs/checkpoint-postgres/langgraph/checkpoint/postgres/__init__.py#L1
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fanout_to_subgraph_10x: Mean +- std dev: 60.7 ms +- 1.2 ms
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fanout_to_subgraph_10x_sync: Mean +- std dev: 51.9 ms +- 0.6 ms
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fanout_to_subgraph_10x_checkpoint: Mean +- std dev: 73.7 ms +- 0.9 ms
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fanout_to_subgraph_10x_checkpoint_sync: Mean +- std dev: 94.1 ms +- 1.2 ms
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fanout_to_subgraph_100x: Mean +- std dev: 609 ms +- 23 ms
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fanout_to_subgraph_100x_sync: Mean +- std dev: 509 ms +- 8 ms
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fanout_to_subgraph_100x_checkpoint: Mean +- std dev: 756 ms +- 17 ms
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fanout_to_subgraph_100x_checkpoint_sync: Mean +- std dev: 940 ms +- 17 ms
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react_agent_10x: Mean +- std dev: 30.7 ms +- 0.7 ms
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react_agent_10x_sync: Mean +- std dev: 22.7 ms +- 0.3 ms
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react_agent_10x_checkpoint: Mean +- std dev: 37.8 ms +- 0.7 ms
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react_agent_10x_checkpoint_sync: Mean +- std dev: 36.8 ms +- 0.4 ms
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react_agent_100x: Mean +- std dev: 339 ms +- 9 ms
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react_agent_100x_sync: Mean +- std dev: 274 ms +- 3 ms
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react_agent_100x_checkpoint: Mean +- std dev: 838 ms +- 6 ms
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react_agent_100x_checkpoint_sync: Mean +- std dev: 831 ms +- 6 ms
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wide_state_25x300: Mean +- std dev: 22.8 ms +- 0.4 ms
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wide_state_25x300_sync: Mean +- std dev: 14.7 ms +- 0.2 ms
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wide_state_25x300_checkpoint: Mean +- std dev: 275 ms +- 14 ms
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wide_state_25x300_checkpoint_sync: Mean +- std dev: 271 ms +- 13 ms
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wide_state_15x600: Mean +- std dev: 26.6 ms +- 0.5 ms
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wide_state_15x600_sync: Mean +- std dev: 17.1 ms +- 0.1 ms
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wide_state_15x600_checkpoint: Mean +- std dev: 472 ms +- 16 ms
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wide_state_15x600_checkpoint_sync: Mean +- std dev: 470 ms +- 14 ms
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wide_state_9x1200: Mean +- std dev: 26.6 ms +- 0.7 ms
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wide_state_9x1200_sync: Mean +- std dev: 17.1 ms +- 0.1 ms
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wide_state_9x1200_checkpoint: Mean +- std dev: 308 ms +- 13 ms
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wide_state_9x1200_checkpoint_sync: Mean +- std dev: 304 ms +- 13 ms
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Comparison against main:
libs/checkpoint-postgres/langgraph/checkpoint/postgres/__init__.py#L1
+-----------------------------------------+---------+-----------------------+
| Benchmark | main | changes |
+=========================================+=========+=======================+
| fanout_to_subgraph_100x_checkpoint | 791 ms | 756 ms: 1.05x faster |
+-----------------------------------------+---------+-----------------------+
| fanout_to_subgraph_10x_checkpoint_sync | 97.0 ms | 94.1 ms: 1.03x faster |
+-----------------------------------------+---------+-----------------------+
| react_agent_100x_checkpoint | 858 ms | 838 ms: 1.02x faster |
+-----------------------------------------+---------+-----------------------+
| fanout_to_subgraph_10x_checkpoint | 75.3 ms | 73.7 ms: 1.02x faster |
+-----------------------------------------+---------+-----------------------+
| fanout_to_subgraph_100x | 619 ms | 609 ms: 1.02x faster |
+-----------------------------------------+---------+-----------------------+
| wide_state_9x1200_checkpoint_sync | 308 ms | 304 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| fanout_to_subgraph_10x_sync | 52.6 ms | 51.9 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| wide_state_9x1200 | 27.0 ms | 26.6 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| react_agent_100x_checkpoint_sync | 841 ms | 831 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| react_agent_10x_sync | 23.0 ms | 22.7 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| wide_state_9x1200_sync | 17.3 ms | 17.1 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| react_agent_10x_checkpoint | 38.2 ms | 37.8 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| fanout_to_subgraph_10x | 61.3 ms | 60.7 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| react_agent_10x_checkpoint_sync | 37.1 ms | 36.8 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| fanout_to_subgraph_100x_checkpoint_sync | 948 ms | 940 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| react_agent_10x | 30.9 ms | 30.7 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| fanout_to_subgraph_100x_sync | 513 ms | 509 ms: 1.01x faster |
+-----------------------------------------+---------+-----------------------+
| Geometric mean | (ref) | 1.01x faster |
+-----------------------------------------+---------+-----------------------+
Benchmark hidden because not significant (11): wide_state_9x1200_checkpoint, react_agent_100x, wide_state_25x300_checkpoint, wide_state_25x300_checkpoint_sync, wide_state_15x600, wide_state_15x600_sync, wide_state_25x300_sync, wide_state_15x600_checkpoint_sync, react_agent_100x_sync, wide_state_25x300, wide_state_15x600_checkpoint
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