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| author | Russ Cox <rsc@golang.org> | 2022-09-19 21:48:10 -0400 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2022-09-29 16:23:56 +0000 |
| commit | 2ff5fbfbd4539d321043e6b84691ecb131402030 (patch) | |
| tree | 834ff22108a009d309babb4d1019ed458aa1108a /src/os/exec/exec_test.go | |
| parent | 9861e8b2fd83dec24a6ced44998dca52abd6ccff (diff) | |
| download | go-2ff5fbfbd4539d321043e6b84691ecb131402030.tar.xz | |
cmd/compile: limit goroutine count to parallelism
When the compiler crashes, it is not uncommon to see many hundreds
of goroutines all blocked waiting their turn to be one of the nWorkers
goroutines that is allowed to run. All these goroutine stacks are not a
terribly efficient use of memory, and they also make the crash dumps
hard to read.
Introduce a manager goroutine to hand out work to at most nWorker
goroutines, maintaining pending work in a local slice, rather than
having all those blocked goroutines hanging around waiting to run.
Change-Id: I46cb4e1afd6392805f359e14554ebc17d538bcba
Reviewed-on: https://go-review.googlesource.com/c/go/+/431956
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Diffstat (limited to 'src/os/exec/exec_test.go')
0 files changed, 0 insertions, 0 deletions