Re: Pg+Linux swap use

From: Greg Stark <gsstark(at)mit(dot)edu>
To: William Yu <wyu(at)talisys(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Pg+Linux swap use
Date: 2003-11-02 16:33:03
Message-ID: 87y8uy91ds.fsf@stark.dyndns.tv
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-performance


William Yu <wyu(at)talisys(dot)com> writes:

> Rob Sell wrote:
>
> > Not being one to hijack threads, but I haven't heard of this performance hit
> > when using HT, I have what should all rights be a pretty fast server, dual
> > 2.4 Xeons with HT 205gb raid 5 array, 1 gig of memory. And it is only 50% as
> > fast as my old server which was a dual AMD MP 1400's with a 45gb raid 5
> > array and 1gb of ram.
>
> Not to get into a big Intel vs AMD argument but 50% sounds about right. Let's
> first assume that the QS rating for the MP1400 is relatively accurate and
> convert that to a 1.4GHz Xeon. 2.4/1.4 = +71%. Since processor performance
> does not increase linearly with clockspeed, 50% is in line with expectations.

Hm. You've read "50% as fast" as "50% faster".
I wonder which the original poster intended.

--
greg

In response to

Responses

Browse pgsql-performance by date

  From Date Subject
Next Message Lee Hughes 2003-11-03 16:20:53 join_collapse_limit, from_collapse_limit options missing
Previous Message Rajesh Kumar Mallah 2003-11-01 08:50:59 Re: Query puts 7.3.4 on endless loop but 7.4beta5 is fine.