Hi,
On 2026-06-09 12:32:31 +0200, Jakub Wartak wrote:
> And I've bumped TEST_JOBS 4->8 (even with 4 VCPUs), because my local runs
> showed in taskmgr that after quite some time we have ended up using just
> ~40% CPU (also with 4 VCPUs) while not doing I/O (this is somehow contrary
> to what Andres was stating earlier).
FWIW, I only measured this for linux, not for windows. On linux it was easy to
do
+ vmstat -y -n -w 1 > vmstat.log &
+
+ meson test ${{env.MTEST_ARGS}} --num-processes ${{env.TEST_JOBS}}
--no-suite setup ${{env.MTEST_TARGET}}
+
+ killall iostat vmstat || true
+
+ - name: Upload stats
+ uses: actions/upload-artifact@v7
+ with:
+ path: |
+ iostat.log
+ vmstat.log
Which showed that there is very little idle CPU other than during first few
seconds and at the end.
I don't know how to do that on windows... I'm sure one can do it, with ETW or
such, but...
Greetings,
Andres Freund
