VACUUM killing my CPU

From: blender(at)jaskom(dot)pl
To: pgsql-performance(at)postgresql(dot)org
Subject: VACUUM killing my CPU
Date: 2006-05-09 09:45:37
Message-ID: 1147167937.749400.182820@u72g2000cwu.googlegroups.com
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Hi all !

I am running PostgreSQL 7.3.2 on Linux 2.6.13...

What I see when VACUUM process is running is:

Cpu(s): 0.0% us, 3.2% sy, 0.0% ni, 0.0% id, 93.5% wa, 3.2% hi,
0.0% si

What I am worry about is "93.5% wa" ...

Could someone explain me what is the VACUUM process waiting for ?

Best regards
David

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