| From: | MARK CALLAGHAN <mdcallag(at)gmail(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: benchmark results comparing versions 15.2 and 16 |
| Date: | 2023-05-09 17:36:09 |
| Message-ID: | CAFbpF8MzS=a1qkfbmr51Mv6phQ9-pKz+P_tB3fN_eJObrVY+fQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, May 5, 2023 at 10:01 PM MARK CALLAGHAN <mdcallag(at)gmail(dot)com> wrote:
> I have two more runs of the benchmark in progress so we will have 3
> results for each of the test cases to confirm that the small regressions
> are repeatable.
>
They get similar results. Then I tried Linux perf but the hierarchical call
stacks, to be used for Flamegraph, have too many "[unknown]" entries.
I was using: ./configure --prefix=$pfx --enable-debug CFLAGS="-O3
-march=native -mtune=native -flto" LDFLAGS="-flto" > o.cf.$x 2> e.cf.$x
Adding -no-omit-frame-pointer fixes the problem, so I am repeating the
benchmark with that to confirm there are still regressions and then I will
get flamegraphs.
--
Mark Callaghan
mdcallag(at)gmail(dot)com
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