cmd/compile: Building a tool chain using PGO does not achieve the 2-7% improvement claimed by blogs #63407
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Issue is not actionable because of missing required information, which needs to be provided.
What version of Go are you using (
go version
)?Does this issue reproduce with the latest release?
yes.
What operating system and processor architecture are you using (
go env
)?go env
OutputWhat did you do?
I wrote CL 533015 to use pgo to build a toolchain, but I did not measure much performance difference using compilebench.
What did you expect to see?
I hope to see pgo improve the performance of the tool chain, as claimed by the blog.
Copy the original text:
In Go 1.21, workloads typically get between 2% and 7% CPU usage improvements from enabling PGO.
What did you see instead?
No significant performance improvement was found using compilebench measurement.
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