From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@anarazel.de>
Cc: Andreas Seltenreich <seltenreich@gmx.de>
Cc: pgsql-hackers@postgresql.org, Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: Michael Paquier <michael.paquier@gmail.com>
Subject: Re: [sqlsmith] stuck spinlock in pg_stat_get_wal_receiver after OOM
Date: Mon, 02 Oct 2017 17:34:42 -0400
Message-ID: <665.1506980082@sss.pgh.pa.us> (raw)
In-Reply-To: <20171002213215.4e3iwt7oh5wdjqm2@alap3.anarazel.de>
References: <87h8vhtgj2.fsf@ansel.ydns.eu>
<20171002210805.x4lxxmarluen6rfg@alap3.anarazel.de>
<459.1506979825@sss.pgh.pa.us>
<20171002213215.4e3iwt7oh5wdjqm2@alap3.anarazel.de>
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Andres Freund <andres@anarazel.de> writes:
> On 2017-10-02 17:30:25 -0400, Tom Lane wrote:
>> Or replace the spinlock with an LWLock?
> That'd probably be a good idea, but I'm loathe to do so in the back
> branches. Not at this callsite, but some others, there's some potential
> for contention.
If this is the only problem then I'd agree we should stick to a spinlock
(I assume the strings in question can't be very long). I was thinking
more about what to do if we find other violations that are harder to fix.
regards, tom lane
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Cc: tgl@sss.pgh.pa.us, andres@anarazel.de, seltenreich@gmx.de, alvherre@2ndquadrant.com, michael.paquier@gmail.com
Subject: Re: [sqlsmith] stuck spinlock in pg_stat_get_wal_receiver after OOM
In-Reply-To: <665.1506980082@sss.pgh.pa.us>
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