Disk I/O - too slow?

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On Sun, 2004-02-22 at 05:15, Dean Mumby wrote:

I have a intel d865perl mb with hyperthreading , sata , and all the same
features , i installed fedora , redhat 9, etc with legacy mode and then
simply switched to enhanced mode and i am running fine. did you check
wether your system had enabled dma

 hdparm -tT /dev/sda

/dev/sda:
 Timing buffer-cache reads:   3568 MB in  2.00 seconds = 1784.00 MB/sec
 Timing buffered disk reads:  166 MB in  3.00 seconds =  55.33 MB/sec

not slow at all
----------------

So...  I've got DMA enabled, Multiple I/O, EIDE 32-bit and lookahead
enabled in my /etc/sysconfig/harddisks file.  Running that hdparm line
gives me:

/dev/hdb: 
Timing buffer-cache reads:   1204 MB in  2.00 seconds = 601.49 MB/sec
Timing buffered disk reads:   96 MB in  3.00 seconds =  31.97 MB/sec

...clearly *not* fast.  This is a Maxtor Diamond ATA 120Gb drive,
7200rpm, on an ASUS A7V8X-X mb.  I'm running FC1 with a 2.6.3 kernel
from kernel.org.  Any suggestions for speeding up my I/O (or more info
to provide)?

TIA,  -Don




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