Wandered Inn wrote:
>
> Oh, another thing. The Maxtor tech told me Linux does not support ata66
> technology. He said there were three thing you needed for it to work:
>
> 1. a drive that supports it,
> 2. a mb or controller card that supports it,
> 3. and an OS that supports it.
>
> Anyone care to argue that point? I've not found any documentation
> regarding ata66 in the Linux world, so I'm clueless...
>
Actually, there are several patches for 2.2.x kernels that will
recognize both the Promise ATA66 and UDMA66 found on Abit motherboards.
There's a good mini-howto here:
http://www.linuxnewbie.org/nhf/intel/hardware/udma66.html
And the patches can be found here:
http://www.kernel.org/pub/linux/kernel/people/hedrick/
I've patched my 2.2.14 kernel and had a noticable speed increase. For
example, here are some hdparm benchmarks:
/dev/hda = UDMA33 ????rpm drive
/dev/hde = UDMA66 7200rpm drive
BEFORE patch:
[root@kenny linux]# /sbin/hdparm -t -T /dev/hda
/dev/hda:
Timing buffer-cache reads: 128 MB in 1.73 seconds =73.99 MB/sec
Timing buffered disk reads: 64 MB in 18.72 seconds = 3.42 MB/sec
[root@kenny linux]# /sbin/hdparm -t -T /dev/hde
/dev/hde:
Timing buffer-cache reads: 128 MB in 1.52 seconds =84.21 MB/sec
Timing buffered disk reads: 64 MB in 27.09 seconds = 2.36 MB/sec
AFTER patch
[root@kenny cegolf]# /sbin/hdparm -t -T /dev/hda
/dev/hda:
Timing buffer-cache reads: 128 MB in 1.57 seconds =81.53 MB/sec
Timing buffered disk reads: 64 MB in 6.31 seconds =10.14 MB/sec
[root@kenny cegolf]# /sbin/hdparm -t -T /dev/hde
/dev/hde:
Timing buffer-cache reads: 128 MB in 1.58 seconds =81.01 MB/sec
Timing buffered disk reads: 64 MB in 3.11 seconds =20.58 MB/sec
--
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Chris Egolf
http://www.ugholf.net ">cegolf@ugholf.net
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