runtime,cl: add Go-compatible sampled memory profiling - #2027

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cpunion wants to merge 26 commits into

xgo-dev:mainfrom

cpunion:codex/stage5-memprofile

Commits on Aug 17, 2026

runtime,cl: stack-keyed sampled memory profiling with gc semantics

cpunion
and
claude
committed
2ee0744
test: memprofile attribution regressions; retire heapsampling xfails

cpunion
and
claude
committed
d9c3ae0
runtime: never wait on the frame-table init latch from the memprofile capture path
cpunion
committed
f8c9798
test: cover memprofile package detection paths
cpunion
committed
685ca14
runtime: initialize frame metadata before memory sampling
cpunion
committed
b83f8e3
test: cover memprofile detection without package metadata
cpunion
committed
b2406f0
runtime: share prefix helper with wasm
cpunion
committed
3fb591c
runtime: make memory profile sampling concurrency-safe
cpunion
committed
c75decd
runtime,cl: adapt memory profiling to current main
cpunion
committed
e544e08
runtime: reduce memory profiler TLS hot-path overhead
cpunion
committed
0dbef80
test: refresh module path expectations

zhouguangyuan0718
authored and
cpunion
committed
a6f9991
runtime: minimize sampled heap profiling overhead
cpunion
committed
3859c4d
ssa,cl: reuse native TLS addresses on hot paths
cpunion
committed
1248692
cl,build: omit unused memory profiling hooks
cpunion
committed
26ddb05
cl,runtime: omit unused memory profile setup
cpunion
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0876322
test: stabilize memory profile rate transition
cpunion
committed
e98d946
test: materialize memory profile size samples
cpunion
committed
22e3d20

Commits on Aug 18, 2026

benchmark: stabilize and track memory profile paths
cpunion
committed
7b1e320
benchmark: publish stable profile workloads
cpunion
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2c18656
benchmark: interleave pull request comparisons
cpunion
committed
ceb4754
benchmark: pair individual microbenchmarks
cpunion
committed
94289e3
benchmark: alternate program revision order
cpunion
committed
d268ae6
ci: allow benchmark setup variance
cpunion
committed
341531c
ci: use setup-benchmark-go-action v1.0.5
cpunion
committed
e67b507
ci: pin benchmark action v1.0.5
cpunion
committed
05367fb
runtime: fix trace stop deadlock on Go 1.25

visualfc
authored and
cpunion
committed
a7bafd4