| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Jakub Wartak <jakub(dot)wartak(at)enterprisedb(dot)com> |
| Cc: | Nazir Bilal Yavuz <byavuz81(at)gmail(dot)com>, Jacob Champion <jacob(dot)champion(at)enterprisedb(dot)com>, Jelte Fennema-Nio <postgres(at)jeltef(dot)nl>, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org, Zsolt Parragi <zsolt(dot)parragi(at)percona(dot)com>, Peter Eisentraut <peter(at)eisentraut(dot)org> |
| Subject: | Re: Heads Up: cirrus-ci is shutting down June 1st |
| Date: | 2026-06-09 12:14:20 |
| Message-ID: | 3qn3yu7qvanfzzbozruheffpjfqd4lnmlnpg4fquauex545572@bqfppnxz2ijg |
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| Lists: | pgsql-hackers |
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(at)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
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