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Date: Wed, 17 Aug 2005 20:56:12 -0700
From: Mark Knecht <markknecht@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Slow HD
In-Reply-To: <200508180016.06437.pupeno@pupeno.com>
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References: <200508171813.12154.pablo.fernandez@reliable.com.ar>
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<200508172352.39649.pupeno@pupeno.com>
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On 8/17/05, Pupeno <pupeno@pupeno.com> wrote:
> On Wednesday 17 August 2005 23:52, Pupeno wrote:
> > I have this as module and it seem to be loaded automatically because lsmod
> > shows:
> > piix 9476 0 [permanent]
> >
> > Maybe it has to be compiled on the kernel (not as a module) to work ?
> I compiled it in the kernel and now DMA is on by default.
>
> # hdparm /dev/hda
>
> /dev/hda:
> multcount = 16 (on)
> IO_support = 0 (default 16-bit)
> unmaskirq = 0 (off)
> using_dma = 1 (on)
> keepsettings = 0 (off)
> readonly = 0 (off)
> readahead = 256 (on)
> geometry = 65535/16/63, sectors = 40007761920, start = 0
>
>
> and the tests are better:
> /dev/hda:
> Timing cached reads: 1332 MB in 2.01 seconds = 664.11 MB/sec
> Timing buffered disk reads: 76 MB in 3.01 seconds = 25.25 MB/sec
>
> well, at least the buffered one. Can it be tuned more ?
>
> Thanks
> --
> Pupeno
Hey, much better results. Cool. The results look pretty reasonable.
You can play around with the read ahead a bit if you want. Try it with
unmaskirq both ways, etc.
Do a reboot also and make sure your settings stick. They probably will
but it's good to do a check while you're looking at this vs. tomorrow
when you're not.
Cheers,
Mark
--
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