Re: Wierd context-switching issue on Xeon

From: Dirk Lutzebäck <lutzeb(at)aeccom(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Josh Berkus <josh(at)agliodbs(dot)com>
Cc: pgsql-performance(at)postgreSQL(dot)org, Neil Conway <neilc(at)samurai(dot)com>
Subject: Re: Wierd context-switching issue on Xeon
Date: 2004-04-20 14:29:01
Message-ID: 408533AD.40904@aeccom.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-performance

Dirk Lutzebaeck wrote:

> c) Dual XEON DP, non-bigmem, HT on, E7500 Intel chipset (Supermicro)
>
> performs well and I could not observe context switch peaks here (one
> user active), almost no extra semop calls

Did Tom's test here: with 2 processes I'll reach 200k+ CS with peaks to
300k CS. Bummer.. Josh, I don't think you can bash the ServerWorks
chipset here nor bigmem.

Dirk

In response to

Responses

Browse pgsql-performance by date

  From Date Subject
Next Message Dave Cramer 2004-04-20 14:50:52 Re: Toooo many context switches (maybe SLES8?)
Previous Message Chris Hoover 2004-04-20 14:20:05 Use of subquery causes seq scan???