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* Add log message when worker lock timeouts get large (#18124)Devon Hudson2025-02-121-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is to help track down a possible, but very rare, worker deadlock that was seen on matrix.org. In theory, you could work back from an instance of these new logs to the approximate time when the lock was obtained and focus the diagnostic efforts there. ### Pull Request Checklist <!-- Please read https://element-hq.github.io/synapse/latest/development/contributing_guide.html before submitting your pull request --> * [x] Pull request is based on the develop branch * [x] Pull request includes a [changelog file](https://element-hq.github.io/synapse/latest/development/contributing_guide.html#changelog). The entry should: - Be a short description of your change which makes sense to users. "Fixed a bug that prevented receiving messages from other servers." instead of "Moved X method from `EventStore` to `EventWorkerStore`.". - Use markdown where necessary, mostly for `code blocks`. - End with either a period (.) or an exclamation mark (!). - Start with a capital letter. - Feel free to credit yourself, by adding a sentence "Contributed by @github_username." or "Contributed by [Your Name]." to the end of the entry. * [x] [Code style](https://element-hq.github.io/synapse/latest/code_style.html) is correct (run the [linters](https://element-hq.github.io/synapse/latest/development/contributing_guide.html#run-the-linters))
* Format files with Ruff (#17643)Quentin Gliech2024-09-021-1/+1
| | | | | | I thought ruff check would also format, but it doesn't. This runs ruff format in CI and dev scripts. The first commit is just a run of `ruff format .` in the root directory.
* Improve lock performance when a lot of locks are waiting (#16840)Mathieu Velten2024-03-141-6/+9
| | | | | | | | | | | | 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.
* Correctly mention previous copyright (#16820)Erik Johnston2024-01-231-0/+1
| | | | | During the migration the automated script to update the copyright headers accidentally got rid of some of the existing copyright lines. Reinstate them.
* Update license headersPatrick Cloke2023-11-211-10/+16
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* Rename pagination&purge locks and add comments explaining them (#16112)Mathieu Velten2023-08-161-1/+5
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* Add ability to wait for locks and add locks to purge history / room deletion ↵Erik Johnston2023-07-311-0/+333
(#15791) c.f. #13476