Re: [PERFORM] How to debug performance problems

2007-02-21 Thread Mark Stosberg
Ray Stell wrote: > I'd like to have a toolbox prepared for when performance goes south. > I'm clueless. Would someone mind providing some detail about how to > measure these four items Craig listed: > > 1. The first thing is to find out which query is taking a lot of time. > > 2. A long-running

Re: [PERFORM] How to debug performance problems

2007-02-21 Thread Ray Stell
On Wed, Feb 21, 2007 at 08:09:49AM -0800, Craig A. James wrote: > I hope I didn't give the impression that these were the only thing to look > at ... those four items just popped into my head, because they've come up > repeatedly in this forum. There are surely more things that could be > suspe

Re: [PERFORM] How to debug performance problems

2007-02-21 Thread Craig A. James
Ray, I'd like to have a toolbox prepared for when performance goes south. I'm clueless. Would someone mind providing some detail about how to measure these four items Craig listed: I hope I didn't give the impression that these were the only thing to look at ... those four items just popped

Re: [PERFORM] How to debug performance problems

2007-02-21 Thread Ray Stell
I'd like to have a toolbox prepared for when performance goes south. I'm clueless. Would someone mind providing some detail about how to measure these four items Craig listed: 1. The first thing is to find out which query is taking a lot of time. 2. A long-running transaction keeps vacuum from

Re: [PERFORM] How to debug performance problems

2007-02-19 Thread Scott Marlowe
On Mon, 2007-02-19 at 12:18, Jeff Davis wrote: > On Mon, 2007-02-19 at 11:50 +0100, Andreas Tille wrote: > > Hi, > > > > I'm running a web application using Zope that obtains all data > > from a PostgreSQL 7.4 database (Debian Sarge system with package > > 7.4.7-6sarge4 on an "older" Sparc machine

Re: [PERFORM] How to debug performance problems

2007-02-19 Thread Jeff Davis
On Mon, 2007-02-19 at 11:50 +0100, Andreas Tille wrote: > Hi, > > I'm running a web application using Zope that obtains all data > from a PostgreSQL 7.4 database (Debian Sarge system with package > 7.4.7-6sarge4 on an "older" Sparc machine, equipped with 2GB Upgrade to 8.2.3 if possible, or at le

Re: [PERFORM] How to debug performance problems

2007-02-19 Thread Craig A. James
Andreas Tille wrote: My web application was running fine for years without any problem and the performance was satisfying. Some months ago I added a table containing 450 data rows ... Since about two weeks the application became *drastically* slower and I urgently have to bring back the old

[PERFORM] How to debug performance problems

2007-02-19 Thread Andreas Tille
Hi, I'm running a web application using Zope that obtains all data from a PostgreSQL 7.4 database (Debian Sarge system with package 7.4.7-6sarge4 on an "older" Sparc machine, equipped with 2GB memory and two processors E250 server). Once I did some performance tuning and found out that max