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Re: Sun Donated a Sun Fire T2000 to the PostgreSQL

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Robert Lor <Robert(dot)Lor(at)Sun(dot)COM>
Cc: Tatsuo Ishii <ishii(at)sraoss(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org, pgsql-performance(at)postgresql(dot)org
Subject: Re: Sun Donated a Sun Fire T2000 to the PostgreSQL
Date: 2006-07-23 18:10:26
Message-ID: 3706.1153678226@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-performance
Robert Lor <Robert(dot)Lor(at)Sun(dot)COM> writes:
> Here is the break down between exclusive & shared LWLocks. Do the 
> numbers look reasonable to you?

Yeah, those seem plausible, although the hold time for
CheckpointStartLock seems awfully high --- about 20 msec
per transaction.  Are you using a nonzero commit_delay?

			regards, tom lane

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