| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Justin Pryzby <pryzby(at)telsasoft(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Melanie Plageman <melanieplageman(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, Daniel Gustafsson <daniel(at)yesql(dot)se> |
| Subject: | Re: Adding CI to our tree |
| Date: | 2022-03-10 03:54:13 |
| Message-ID: | CA+hUKG+Y_9PNuLsLXi-_8CqcMJ6+OW-NuGE6vwDKSVMCnCiKqA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Mar 10, 2022 at 4:33 PM Andres Freund <andres(at)anarazel(dot)de> wrote:
> On 2022-03-10 15:43:16 +1300, Thomas Munro wrote:
> > I'm confused.
>
> The "terrible IO wait" thing was before we reduced the number of CPUs and
> concurrent jobs. It makes sense to me that with just two CPUs we're CPU bound,
> in which case -Og obviously can make a difference.
Oh, duh, yeah, that makes sense when you put it that way and
considering the CPU graph:
-O0: https://cirrus-ci.com/task/4578631912521728
-Og: https://cirrus-ci.com/task/5239486182326272
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