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runtime: increase MaxGomaxprocs to 1024

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Currently MaxGomaxprocs is 256. The previous CL saved enough per-P
static space that we can quadruple MaxGomaxprocs (and hence the static
size of allp) and still come out ahead.

This is safe for Go 1.9. In Go 1.10 we'll eliminate the hard-coded
limit entirely.

Updates #15131.

Change-Id: I919ea821c1ce64c27812541dccd7cd7db4122d16
Reviewed-on: https://go-review.googlesource.com/45673
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Austin Clements 2017-06-13 16:19:16 -04:00 committed by Brad Fitzpatrick
parent 538b3a5f37
commit fcb45b9c61
1 changed files with 1 additions and 1 deletions
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2
src/runtime/runtime2.go
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@ -518,7 +518,7 @@ type p struct {
const (
// The max value of GOMAXPROCS.
// There are no fundamental restrictions on the value.
_MaxGomaxprocs = 1 << 8
_MaxGomaxprocs = 1 << 10
)
type schedt struct {