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Re: 7.2 is slow?

From: Jussi Mikkola <jussi(dot)mikkola(at)bonware(dot)com>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: Zeugswetter Andreas SB SD <ZeugswetterA(at)spardat(dot)at>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Hannu Krosing <hannu(at)tm(dot)ee>, Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org, inxc(at)itmeedia(dot)ee
Subject: Re: 7.2 is slow?
Date: 2001-12-19 12:54:48
Message-ID: 3C208E18.587F5EBD@bonware.com (view raw or flat)
Thread:
Lists: pgsql-hackers
Hi !

Yes, now I've tested with 7.2b4. The result is about the  same as with 7.1.

About 200 messages with four processors and about 600 messages with one
processor.

Jussi

>
>
> Yes!  This sleeping case is the problem we expected to see on SMP
> machines in >= 7.1 because of lock contention and a select() that can't
> sleep for less than 1/100 second.  Please try the current 7.2 snapshot
> and let us know what performance you get.
>
> --
>   Bruce Momjian                        |  http://candle.pha.pa.us
>   pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 853-3000
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>
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--
Jussi Mikkola                    Project Manager
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Tekniikantie 12                  tel +358 9 2517 5570
02150 Espoo                      fax +358 9 2517 5571
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