Re: Reducing relation locking overhead

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Kevin Brown <kevin(at)sysexperts(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Reducing relation locking overhead
Date: 2005-12-05 03:07:38
Message-ID: 12414.1133752058@sss.pgh.pa.us
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Kevin Brown <kevin(at)sysexperts(dot)com> writes:
> - when requesting a type of lock, one must first acquire all lesser
> lock types against the object in order of strength. Hence, one must
> acquire AccessShareLock before acquiring AccessExclusiveLock.

This is exactly wrong ...

regards, tom lane

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