Re: very (I repeat) slow DBWR

From: Walter Orb <orb_at_us.ibm.com>
Date: Mon, 10 May 1999 11:54:07 -0700
Message-ID: <7h7a10$ska$1@rtpnews.raleigh.ibm.com>

Check your system for APAR IX67978. This fixes a known problem with slow writes on JFS in AIX 4.2.1.

--
Walter Orb <orb_at_ibm.net>

Gerard H. Pille <ghp_at_skynet.be> wrote in message news:01be96cf$41038920$390120c0_at_GHP.creyfs.be...
> Hai Folks,
>
> I have a huge performance problem with the DBWR-proces(ses) on an AIX
> 4.2.1. While the redo-logs (4x50Mb) get filled in a couple of minutes
> (during which there is high IO on the disk containing them), the
> checkpointing (which starts when a redo-log is half-full) takes more
than
> an hour, resulting, of course, in locking up when all of the redo-logs
are
> full.
>
> The data-files of the tablespace being loaded via import, are on one
> SSA-disk. This disk also contains the log of the Journaled File
System. Received on Mon May 10 1999 - 13:54:07 CDT