| commit | 75e79adaf94a3f883bd2d88467ee7c72ea18c0a3 | [log] [tgz] |
|---|---|---|
| author | Bryan C. Mills <bcmills@google.com> | Mon Apr 20 11:32:05 2020 -0400 |
| committer | Bryan C. Mills <bcmills@google.com> | Mon Apr 20 21:23:00 2020 +0000 |
| tree | 079b23b8813b80957487d0b03e85d76484c3a790 | |
| parent | 40a144b94f14c3f3fbe06e097a236a5543ada57f [diff] |
cmd/api: limit concurrent 'go list' calls to GOMAXPROCS Each invocation of 'go list' may consume a significant quantity of system resources, including buffers for reading files and RAM for the runtime's memory footprint. Very small builders may even hit swap as a result of that load, further exacerbating resource contention. To avoid overloading small builders, restrict 'go list' calls to runtime.GOMAXPROCS as it is set at the first call to loadImports. This also somewhat improves running time even on larger machines: on my workstation, this change reduces the wall time for 'go test cmd/api' by around 100ms. Updates #38537 Change-Id: I968e0f961a8f1d84c27e1ab8b621b9670dcfd448 Reviewed-on: https://go-review.googlesource.com/c/go/+/228998 Run-TryBot: Bryan C. Mills <bcmills@google.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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