uninterruptible sleep

From: "Mr(dot) Dan" <bitsandbytes88(at)hotmail(dot)com>
To: pgsql-admin(at)postgresql(dot)org
Subject: uninterruptible sleep
Date: 2006-08-08 13:59:06
Message-ID: BAY116-F13E7088CD2FF1081518258D1540@phx.gbl
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Hi,

When I run an online-backup script(v810) on SLES, the process immediately
goes into the 'D' STATE.
The backup finishes in a couple of hours. The backup is good and I can
restore. Why does it do that though? If I run the backup script at 12:20
AM instead of 1:20 AM it finishes in 20 minutes instead of 2 hours. When I
run ps auxr, I don't see any weird process running between 1-3 AM that seem
inauspicious.

~DjK

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