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Re: testing HS/SR - 1 vs 2 performance

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Erik Rijkers <er(at)xs4all(dot)nl>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: testing HS/SR - 1 vs 2 performance
Date: 2010-04-26 07:43:09
Message-ID: 1272267789.4161.2919.camel@ebony (view raw or flat)
Thread:
Lists: pgsql-hackers
On Sun, 2010-04-25 at 23:52 +0200, Erik Rijkers wrote:

> I'll try to repeat this pattern on other hardware; although
> if my tests were run with faulty hardware I wouldn't know how/why
> that would give the above effect (such a 'regular aberration').

> testing is more difficult than I thought...

Thanks again for your help.

Please can you confirm:
* Are the standby tests run while the primary is completely quiet?
* What OS is this? Can we use dtrace scripts?

Can anyone else confirm these test results: large scale factor and small
number of sessions?

-- 
 Simon Riggs           www.2ndQuadrant.com


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