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Date:      Fri, 11 May 2001 10:54:26 +0100
From:      simond@irrelevant.org
To:        Leon Breedt <ljb@devco.net>
Cc:        freebsd-mobile@freebsd.org
Subject:   Re: slow IDE performance
Message-ID:  <20010511105426.A75378@irrelevant.org>
In-Reply-To: <20010511112808.E8710@shell.devco.net>; from ljb@devco.net on Fri, May 11, 2001 at 11:28:08AM %2B0200
References:  <20010511112808.E8710@shell.devco.net>

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On Fri, May 11, 2001 at 11:28:08AM +0200, Leon Breedt wrote:
> 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"

I didn't notice any problems with ufs on it, but when I tried using the
msdos filesystem without a write cache it crawled :(

-- 
Simon Dick					simond@irrelevant.org
"Why do I get this urge to go bowling everytime I see Tux?"

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