Re: Performance degradation in commit ac1d794

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Andres Freund <andres(at)anarazel(dot)de>
Cc: Васильев Дмитрий <d(dot)vasilyev(at)postgrespro(dot)ru>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Performance degradation in commit ac1d794
Date: 2015-12-26 16:06:37
Message-ID: 23259.1451145997@sss.pgh.pa.us
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Andres Freund <andres(at)anarazel(dot)de> writes:
> A unportable and easy version of this, actually making sense this time,
> would be to use prctl(PR_SET_PDEATHSIG, SIGQUIT). That'd send SIGQUIT to
> backends whenever postmaster dies. Obviously that's not portable
> either - doing this for linux only wouldn't be all that kludgey tho.

Hmm. That would have semantics rather substantially different from
the way that the WL_POSTMASTER_DEATH code behaves. But I don't know
how much we care about that, since the whole scenario is something
that should not happen under normal circumstances. Maybe cross-platform
variation is OK as long as it doesn't make the code too hairy.

regards, tom lane

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