>You're not swapping are you? One explanation could be that PG is >configured to think it has access to a little more memory than the box >can really provide, which forces it to swap once it's been running for >long enough to fill up its shared buffers or after a certain number of >concurrent connections are opened. > >-- Mark Lewis
No - no swap on this machine. The number of connections is stable. Ralph On Fri, 2007-05-18 at 10:45 +1200, Ralph Mason wrote: > We have a database running on a 4 processor machine. As time goes by > the IO gets worse and worse peeking at about 200% as the machine loads > up. > > > > The weird thing is that if we restart postgres it’s fine for hours but > over time it goes bad again. > > > > (CPU usage graph here > http://www.flickr.com/photos/[EMAIL PROTECTED]/502596262/ ) You can clearly > see where the restart happens in the IO area > > > > This is Postgres 8.1.4 64bit. > > > > Anyone have any ideas? > > > > Thanks > > Ralph > > > > > > -- > Internal Virus Database is out-of-date. > Checked by AVG Free Edition. > Version: 7.5.432 / Virus Database: 268.15.9/573 - Release Date: > 5/12/2006 4:07 p.m. > > ---------------------------(end of broadcast)--------------------------- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate -- Internal Virus Database is out-of-date. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.9/573 - Release Date: 5/12/2006 4:07 p.m. -- Internal Virus Database is out-of-date. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.9/573 - Release Date: 5/12/2006 4:07 p.m. ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
