Commit message (Collapse) | Author | Age | Files | Lines | |
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* | 1.104.0rc1 | Erik Johnston | 2024-03-26 | 1 | -1/+0 |
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* | Improve lock performance when a lot of locks are waiting (#16840) | Mathieu Velten | 2024-03-14 | 1 | -0/+1 |
When a lot of locks are waiting for a single lock, notifying all locks independently with `call_later` on each release is really costly and incurs some kind of async contention, where the CPU is spinning a lot for not much. The included test is taking around 30s before the change, and 0.5s after. It was found following failing tests with https://github.com/element-hq/synapse/pull/16827. |