feat: automatically set GOMEMLIMIT#6809
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mholt merged 4 commits intocaddyserver:masterfrom Jan 27, 2025
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Thanks Kevin! Do you think we could add a comment to this code (and maybe it could be shared with the gomaxprocs code above it) since I don't think it's obvious why it's useful? Then we will merge!
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@mholt, done. I also added logs for GOMAXPROCS to improve the overall experience. Commands now start with something like this: |
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* feat: automatically set GOMEMLIMIT * add system support * comments * add logs
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Setting the Go runtime memory limit can improve significantly the performance of Caddy (and FrankenPHP and Mercure, according to our tests), especially on low-resources machines and containers.
This patch uses github.com/KimMachineGun/automemlimit to automatically find a good limit using the currently configured groups. This is especially useful when setting limits to containers using Docker, Kubernetes, LXC, and the like.
This PR is similar to #6047, which does the same things go the max number of processors.
Thanks to @flovntp for the idea and for finding this library!