diff options
| -rw-r--r-- | src/runtime/mgc.go | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/runtime/mgc.go b/src/runtime/mgc.go index b708720322..e6909918f2 100644 --- a/src/runtime/mgc.go +++ b/src/runtime/mgc.go @@ -1251,7 +1251,12 @@ func gcStart(mode gcMode, trigger gcTrigger) { gcResetMarkState() - work.stwprocs, work.maxprocs = gcprocs(), gomaxprocs + work.stwprocs, work.maxprocs = gomaxprocs, gomaxprocs + if work.stwprocs > ncpu { + // This is used to compute CPU time of the STW phases, + // so it can't be more than ncpu, even if GOMAXPROCS is. + work.stwprocs = ncpu + } work.heap0 = atomic.Load64(&memstats.heap_live) work.pauseNS = 0 work.mode = mode |