Hi all,
I'm posting again the same message because I have had some problem subscribing
the list so i'm not sure it has been received:
doing a simple performance tests i obtained some very unexpected results: if i
issue hdparm -t /dev/md2 i obtain 61 - 65 MB/s while issuing the same test
directly on the partitions which compose md2 (/dev/sda3 and /dev/sdb3) i obtain
84 - 87 MB/s. I didn't expect a so big difference between md2 and one of its
member. What can cause this difference ?
I'm running the test on a Centos 5.4, /dev/md2 is a mounted and used block
device (lvm on top of md2 and the root partion on the lvm volume group), but the
machine was quite idle during the tests. The controller is an Intel ICH9 with
AHCI enabled.
thank you in advance!
Marco
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