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Re: Need for speed

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Cc: Ulrich Wisser <ulrich(dot)wisser(at)relevanttraffic(dot)se>
Subject: Re: Need for speed
Date: 2005-08-17 17:28:04
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance

> I believe the biggest problem is disc io. Reports for very recent data
> are quite fast, these are used very often and therefor already in the
> cache. But reports can contain (and regulary do) very old data. In that
> case the whole system slows down. To me this sounds like the recent data
> is flushed out of the cache and now all data for all queries has to be
> fetched from disc.

How large is the database on disk?

> My machine has 2GB memory, please find postgresql.conf below.

hmmmm ...

Josh Berkus
Aglio Database Solutions
San Francisco

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