From 36047826211754e8f24c33a2bc063b72aa1c91fa Mon Sep 17 00:00:00 2001 From: Michael Anthony Knyszek Date: Fri, 23 Jan 2026 16:38:50 +0000 Subject: [PATCH] [release-branch.go1.26] internal/buildcfg: disable sizespecializedmalloc by default We're finding some regressions in overall icache footprint at scale and we should figure out how to deal with those before rolling this out to everybody. Change-Id: I98e792db31712bf64575d76dfeafedb48898f76a Reviewed-on: https://go-review.googlesource.com/c/go/+/738780 LUCI-TryBot-Result: Go LUCI Reviewed-by: Michael Pratt Auto-Submit: Michael Knyszek (cherry picked from commit 4af8ad24ee3b55ccb644680d95e2502e5551ea0b) Reviewed-on: https://go-review.googlesource.com/c/go/+/738900 --- src/internal/buildcfg/exp.go | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/src/internal/buildcfg/exp.go b/src/internal/buildcfg/exp.go index df41f79338..aa41986e8e 100644 --- a/src/internal/buildcfg/exp.go +++ b/src/internal/buildcfg/exp.go @@ -81,12 +81,11 @@ func ParseGOEXPERIMENT(goos, goarch, goexp string) (*ExperimentFlags, error) { dwarf5Supported := (goos != "darwin" && goos != "ios" && goos != "aix") baseline := goexperiment.Flags{ - RegabiWrappers: regabiSupported, - RegabiArgs: regabiSupported, - Dwarf5: dwarf5Supported, - RandomizedHeapBase64: true, - SizeSpecializedMalloc: true, - GreenTeaGC: true, + RegabiWrappers: regabiSupported, + RegabiArgs: regabiSupported, + Dwarf5: dwarf5Supported, + RandomizedHeapBase64: true, + GreenTeaGC: true, } flags := &ExperimentFlags{ Flags: baseline, -- 2.52.0