Below par performance of SATA drives on FC4-Test2

[Vamsee Krishna Gomatam]

Hi,
I've recently installed FC4 Test 2. The system is AMD64 (installed
x86_64) on VIA 8237 Mobo. I have one Samsung SATA drive (120GB) on VIA
VT6420 controller and 2 IDE drives of 80GB each. I've performed a
hdparm check on these three drives and got the following results:
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[root at laetitia ~]# hdparm -tT /dev/sda /dev/hda /dev/hdb

/dev/sda:
 Timing cached reads:   1676 MB in  2.00 seconds = 837.29 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
 Timing buffered disk reads:  120 MB in  3.00 seconds =  39.94 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device

/dev/hda:
 Timing cached reads:   1788 MB in  2.00 seconds = 893.24 MB/sec
 Timing buffered disk reads:  118 MB in  3.02 seconds =  39.03 MB/sec

/dev/hdb:
 Timing cached reads:   1784 MB in  2.00 seconds = 890.80 MB/sec
 Timing buffered disk reads:  166 MB in  3.02 seconds =  55.03 MB/sec

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The performance of SATA drive is not upto the mark. I used to get
better results on FC3. What could be the possible problem and any
ideas on how to solve it?

Regards,
GVK
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