Instrument `_check_sigs_and_hash_and_fetch` to trace time spent in child concurrent calls because I've see `_check_sigs_and_hash_and_fetch` take [10.41s to process 100 events](https://github.com/matrix-org/synapse/issues/13587) Fix https://github.com/matrix-org/synapse/issues/13587 Part of https://github.com/matrix-org/synapse/issues/13356 |
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| .. | ||
| __init__.py | ||
| context_factory.py | ||
| event_signing.py | ||
| keyring.py | ||