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Re: Disk Fills Up and fsck "Compresses" it

From: "Jim C(dot) Nasby" <decibel(at)decibel(dot)org>
To: Y Sidhu <ysidhu(at)gmail(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Disk Fills Up and fsck "Compresses" it
Date: 2007-05-15 23:41:53
Message-ID: 20070515234152.GD20707@nasby.net (view raw or flat)
Thread:
Lists: pgsql-performance
I'm guessing you're seeing the affect of softupdates. With those enabled
it can take some time before the space freed by a delete will actually
show up as available.

On Tue, May 15, 2007 at 01:18:42PM -0700, Y Sidhu wrote:
> Anyone seen PG filling up a 66 GB partition from say 40-ish percentage to
> 60-ish percentage in a manner of minutes. When I run a 'fsck' the disk usage
> comes down to 40-ish percentage. That's about 10+ GB's variance.
> 
> This is a FreeBSD 6.2 RC2, 4GB memory, Xeon 3.2 GHz '4' of the '8' CPUs in
> use - dual cpu, dual core with HTT turned off in the sense that the other 4
> cpu's have been masked out. The drive is a Western Digital 70 GB SATA.
> 
> -- 
> Yudhvir Singh Sidhu
> 408 375 3134 cell

-- 
Jim Nasby                                      decibel(at)decibel(dot)org
EnterpriseDB      http://enterprisedb.com      512.569.9461 (cell)

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