Re: Wierd context-switching issue on Xeon

Dirk Lutzebäck <lutzeb@aeccom.com>

From: Dirk Lutzebäck <lutzeb@aeccom.com>

To: Tom Lane <tgl@sss.pgh.pa.us>, Josh Berkus <josh@agliodbs.com>

Cc: pgsql-performance@postgreSQL.org, Neil Conway <neilc@samurai.com>

Date: 2004-04-20T14:29:01Z

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