On Tue, 04 Mar 2025 14:25:44 +0100,
Martin Pieuchot <mpi@grenadille.net> wrote:
> 
> Diff below includes all the changes I made during the last months to get
> rid of lock contention and enable parallel fault handling.
> 
> With it I measured a 5% performance improvement and a reduction of %sys
> time of 25% on 24CPU amd64.  On my 80CPU arm64 performances also improve
> by 5% and %sys time increase by ~5%.
> 
> I'd be happy to hear about more tests, especially on bulk builds and on
> other architectures.
>

I need to rebuild chromium, so I don't mind to do it twice to test the diff
on arm64 as well.

Without your diff:

  444m02.18s real  3014m28.87s user  1859m28.53s system

With your diff:

  427m18.89s real  3042m22.61s user  1687m28.27s system

Differences:
 - real time is decreased for about 3%
 - user time is decreased for about 1%
 - system time is decreased for about 10%

I had built it as: make clean; make patch; time make MAKE_JOBS=1

No crash, deadlock or any issue during that test.

-- 
wbr, Kirill