Re: Large databases, performance

Shridhar Daithankar <shridhar_daithankar@persistent.co.in>

From: "Shridhar Daithankar" <shridhar_daithankar@persistent.co.in>
To: pgsql-general <pgsql-general@postgresql.org>
Date: 2002-10-03T15:50:16Z
Lists: pgsql-hackers, pgsql-performance
On 3 Oct 2002 at 10:26, Charles H. Woloszynski wrote:

> Forgive my ignorance, but what about 2.4.19-16 is that much faster?  Are 
> we talking about 2x improvement for your tests?  We are currently on 
> 2.4.9 and looking at the performance and wondering... so any comments 
> are appreciated.

Well, for one thing, 2.4.19 contains backported O(1) scheduler patch which 
improves SMP performance by heaps as task queue is per cpu rather than one per 
system. I don't think any system routinely runs thousands of processes unless 
it's a web/ftp/mail server. In that case improved scheduling wuld help as 
well..

Besides there were major VM rewrites/changes after 2.4.10 which corrected 
almost all the major VM fiaskos on linux. For anything VM intensive it's 
recommended that you run 2.4.17 at least.

I would say it's worth going for it.

Bye
 Shridhar

--
Sturgeon's Law:	90% of everything is crud.