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doc/go1.18: add information on new pacer.

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This is based off Michael's notes.

Updates #47694

Change-Id: I6e7944f85b776e8481829a2fafd177a49557c6ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/368156
Trust: Jeremy Faller <jeremy@golang.org>
Run-TryBot: Jeremy Faller <jeremy@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
This commit is contained in:
Jeremy Faller 2021-12-01 12:44:04 -05:00
parent bbe1be5c19
commit d514411625
1 changed files with 15 additions and 0 deletions
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@ -200,6 +200,21 @@ proposal</a>.
into Win32 functions that block for extended periods of time.
</p>
<p><!-- https://github.com/golang/go/issues/44167-->
The garbage collector now includes non-heap sources of garbage collector work
(e.g., stack scanning) when determining how frequently to run. As a result,
garbage collector overhead is more predictable when these sources are
significant. For most applications these changes will be negligible; however,
some Go applications may now use less memory and spend more time on garbage
collection, or vice versa, than before. The intended workaround is to tweak
<code>GOGC</code> where necessary.
</p>
<p>
The runtime now returns memory to the operating system more efficiently and has
been tuned to work more aggressively as a result.
</p>
<h2 id="compiler">Compiler</h2>
<p><!-- https://golang.org/issue/40724 -->