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| author | Eric Eastwood <erice@element.io> | 2022-09-07 11:41:52 -0500 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-09-07 11:41:52 -0500 |
| commit | d4d3249ded000219a4f875943632c3d0f928d58d (patch) | |
| tree | 0fd96f4533c935708f7b4dd06d7aa49638067439 /synapse/config/key.py | |
| parent | Fix latest deps CI (#13734) (diff) | |
| download | synapse-d4d3249ded000219a4f875943632c3d0f928d58d.tar.xz | |
Instrument `get_metadata_for_events` for tracing (#13730)
When backfilling, `_get_state_ids_after_missing_prev_event` calls [`get_metadata_for_events`](https://github.com/matrix-org/synapse/blob/26bc26586b4b95d63ce7e453e9312469843f796e/synapse/handlers/federation_event.py#L1133). For `#matrix:matrix.org`, it's called with 77k `state_events` which means 77 calls to the database and takes 28 seconds.
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