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zhengjianxun d434c2338b runtime: clarify GC fractional mode description 
nowdays, in runtime/mgc.go,we can see the comment descrition : The fractional worker is necessary when GOMAXPROCS*gcBackgroundUtilization is not an integer.
but it not true such as GOMAXPROCS=5.
in the implemet of startCycle() , Fractional Mode happend only when
GOMAXPROCS<=3 or GOMAXPROCS=6. so utilization can closest to 25%.
Fixes #44380

Change-Id: Id0dd6d9f37759c2c9231f164a013a014216dd442
GitHub-Last-Rev: 5910e76324
GitHub-Pull-Request: golang/go#44381
Reviewed-on: https://go-review.googlesource.com/c/go/+/293630
Reviewed-by: Austin Clements <austin@google.com>
Trust: Michael Pratt <mpratt@google.com>
2021-02-23 19:57:11 +00:00
.github .github: add link to questions in ISSUE_TEMPLATE 2020-01-06 17:05:31 +00:00
api api/go1.16: add go/build/constraint APIs 2021-01-27 21:11:22 +00:00
doc doc/1.16: fix link to fs.FileInfo 2021-02-20 19:33:34 +00:00
lib/time lib/time, time/tzdata: update tzdata to 2021a 2021-01-25 16:08:46 +00:00
misc all: use more precise build tags 2021-02-23 19:55:03 +00:00
src runtime: clarify GC fractional mode description 2021-02-23 19:57:11 +00:00
test cmd/compile: improve bit test code 2021-02-23 18:02:48 +00:00
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.gitignore .gitignore: ignore src/cmd/dist/dist 2017-10-28 21:55:49 +00:00
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README.md

The Go Programming Language

Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.

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