Re: Dual Xeon + HW RAID question

From: Jord Tanner <jord(at)indygecko(dot)com>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: "SZUCS =?ISO-8859-1?Q?G=E1bor?=" <surrano(at)mailbox(dot)hu>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Dual Xeon + HW RAID question
Date: 2003-07-22 17:54:24
Message-ID: 1058896464.4339.46.camel@gecko
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-performance

On Tue, 2003-07-22 at 10:39, Bruce Momjian wrote:
> But CPU affinity isn't realated to hyperthreading, as far as I know.
> CPU affinity tries to keep processes on the same cpu in case there is
> still valuable info in the cpu cache.
>

It is true that CPU affinity is designed to prevent the dump of valuable
CPU cache. My thought is that if you are trying to prevent CPU
contention, you could use CPU affinity to prevent 2 postmaster processes
from running simultaneously on the same die. Am I out to lunch here?
I've not worked with CPU affinity before, so I'm not familiar with the
intimate details.

--
Jord Tanner <jord(at)indygecko(dot)com>

In response to

Responses

Browse pgsql-performance by date

  From Date Subject
Next Message Josh Berkus 2003-07-22 17:56:14 Re: Wrong plan or what ?
Previous Message Mendola Gaetano 2003-07-22 17:48:20 Re: [PERFORM] Wrong plan or what ?