I have often had the same question.
I run in a raid-1 configuration and my read performance( mesured with hdparm
-t ) on the md devices is about half of that of the ha[a-z] devices. I had
always assumed that reads where ballanced among the devices that made up the
raid-1 volume and that reads would actually be faster on the md device.
The security is more important to me than the speed, but faster reads would be
nice.
Craig
Andreas Peter <[EMAIL PROTECTED]> said:
> Hi,
> I've successfully set up SW-RAID0 with Kernel 2.4.3 and Raidtools 0.9.
> I did this to increase the performance of my HD, but nothig happens.
> hdparm -t /dev/md0 : 20.25 MB/sec
> hdparm -t /dev/hda : 20.51 MB/sec
> hdaprm -t /dev/hdc : 20.71 MB/sec
> I thougt the performnace of RAID0 should near 40MB/sec.
> I played with different chunk-sizes, but the result was everytime the same.
> The drives are both Maxtor DiamondMax VL40, 30GB, DMA on.
> No other drive is attached on the bus.
>
> Are there known performanace problems with 2.4.3, or is it necessary to
> apply patches to the kernel?
> Thank you for every hint!
>
> Andreas
> --
> Andreas Peter *** [EMAIL PROTECTED]
>
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