66b8787f6b
Inline scavenging causes significant performance regressions in tail
latency for k8s and has relatively little benefit for RSS footprint.
We disabled inline scavenging in Go 1.12.5 (CL 174102) as well, but
we thought other changes in Go 1.13 had mitigated the issues with
inline scavenging. Apparently we were wrong.
This CL switches back to only doing foreground scavenging on heap
growth, rather than doing it when allocation tries to allocate from
scavenged space.
Fixes #34556
Change-Id: I1f5df44046091f0b4f89fec73c2cde98bf9448cb
Reviewed-on: https://go-review.googlesource.com/c/go/+/183857
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
(cherry picked from commit
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