From: Mischa Sandberg <mischa_sandberg@telus.net>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Stephen Frost <sfrost@snowman.net>
Cc: Marc G. Fournier <scrappy@hub.org>
Cc: pgsql-hackers@postgresql.org
Subject: Re: [ADMIN] postgresql in FreeBSD jails: proposal
Date: Thu, 17 Jan 2008 15:52:33 -0800
Message-ID: <1200613953.478fea419c929@webmail.telus.net> (raw)
In-Reply-To: <17061.1200613772@sss.pgh.pa.us>
References: <1200501702.478e33c61b74e@webmail.telus.net>
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<4089.1200550374@sss.pgh.pa.us>
<20080117143729.GR5031@tamriel.snowman.net>
<1200610323.478fdc131bb3a@webmail.telus.net>
<17061.1200613772@sss.pgh.pa.us>
Quoting Tom Lane <tgl@sss.pgh.pa.us>:
> Mischa Sandberg <mischa_sandberg@telus.net> writes:
> > I'm going to skip the kill(1,0) test and depend on nattch only,
> > with a function that PGSharedMemoryIsInUse() can also use.
> > (For a healthy server, nattch is never less than 2, right?)
>
> Oh, forgot to mention: healthy servers are not the point here.
> You should make the code keep its hands off any segment with
> nonzero nattch, because even one orphaned backend is enough
> to cause trouble.
Note taken. Worth putting a warning in the log, too?
Engineers think that equations approximate reality.
Physicists think that reality approximates the equations.
Mathematicians never make the connection.
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Cc: mischa_sandberg@telus.net, tgl@sss.pgh.pa.us, sfrost@snowman.net, scrappy@hub.org, pgsql-hackers@postgresql.org
Subject: Re: [ADMIN] postgresql in FreeBSD jails: proposal
In-Reply-To: <1200613953.478fea419c929@webmail.telus.net>
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