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Date:      Fri, 11 May 2001 11:28:08 +0200
From:      Leon Breedt <ljb@devco.net>
To:        freebsd-mobile@FreeBSD.ORG
Subject:   slow IDE performance
Message-ID:  <20010511112808.E8710@shell.devco.net>

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Hi,

I'm not sure if this was already posted, a search didn't turn anything up.

On my Thinkpad A20m I experienced insane IDE write slowdowns at some point
in updating to 4.3-RC. I could basically do *nothing* while doing large IDE
transfers. This persisted in -RELEASE and -STABLE.

A quick query of my friendly committer colleague revealed that ATA write
caching was now disabled by default.

Enabling it in /boot/loader.conf restored my sanity:

hw.ata.wc="1"

Cheers!

/ljb

-- 
lj breedt : http://neverborn.org/
coder/sysadm


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