Re: Use WaitLatch for {pre, post}_auth_delay instead of pg_usleep

From: Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>
To: michael(at)paquier(dot)xyz
Cc: bossartn(at)amazon(dot)com, tgl(at)sss(dot)pgh(dot)pa(dot)us, pryzby(at)telsasoft(dot)com, bharath(dot)rupireddyforpostgres(at)gmail(dot)com, pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: Use WaitLatch for {pre, post}_auth_delay instead of pg_usleep
Date: 2021-07-29 07:59:21
Message-ID: 20210729.165921.1599006583688352806.horikyota.ntt@gmail.com
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At Thu, 29 Jul 2021 09:52:08 +0900, Michael Paquier <michael(at)paquier(dot)xyz> wrote in
> On Wed, Jul 28, 2021 at 08:28:12PM +0000, Bossart, Nathan wrote:
> > On 7/28/21, 11:32 AM, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> >> I follow the idea of using WaitLatch to ensure that the delays are
> >> interruptible by postmaster signals, but even that isn't worth a
> >> lot given the expected use of these things. I don't see a need to
> >> expend any extra effort on wait-reporting.
> >
> > +1. The proposed patch doesn't make the delay visibility any worse
> > than what's already there.
>
> Agreed to just drop the patch (my opinion about this patch is
> unchanged). Not to mention that wait events are not available at SQL
> level at this stage yet.

I'm +1 to not adding wait event stuff at all. So the only advantage
this patch would offer is interruptivity. I vote +-0.0 for adding that
interruptivity (+1.0 from the previous opinion of mine:p).

regards.

--
Kyotaro Horiguchi
NTT Open Source Software Center

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