| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Wait events for delayed checkpoints |
| Date: | 2023-10-13 03:51:50 |
| Message-ID: | CA+hUKGLHR69zfR0dYmtcy78b1Aibck0km=6Ns284i2i+2Qf5Rw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Oct 13, 2023 at 2:19 PM Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Thu, Oct 12, 2023 at 7:09 PM Michael Paquier <michael(at)paquier(dot)xyz> wrote:
> > HaveVirtualXIDsDelayingChkpt() does immediately a LWLockAcquire()
> > which would itself report a wait event for ProcArrayLock, overwriting
> > this new one, no?
>
> Ah, right: the wait event should be set and cleared around pg_usleep,
> not the whole loop.
Duh. Yeah. Pushed like that. Thanks both.
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