>> sda 84.02
>> sdb 113,69
>> md2 8,01
>>
>> md2 and his meber have a very different ratio....
>
>Strange isn't it. And the ratios are the other-way-around to what I get.
>I don't currently understand why ... but it might not be at all relevant to
>the speed difference.
Hi,
i did some test on a different machine with centos 5.5 and ICH10 disk
controller. On this machine i have no performance issue: hdparm -t return the
same value (about 107 MB/s) on both /dev/md0 and its members
I measured the "ratio" and i obtained 8.02 for md0 and 505 for meber disk. I it
seems that the "raito" is not so relevant for this issue. What do you think ?
In this case the md device was not mounted.
I also tried several different io scheduler whithout noting any effect on
sequential read eprformance.
Marco
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