On Mon, 2004-02-23 at 20:30, Don Levey wrote:
> 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
Those numbers are pretty respectable. The 31.97 MB/sec sounds about
right for your average 7200 RPM hard drive. On all the standard 7200
RPM drives I have, I get from 30 MB/s to 35 MB/s. YOu need sata or scsi
if you want more then that.
Here is my laptop:
/dev/hda:
Timing buffer-cache reads: 1500 MB in 2.00 seconds = 750.00 MB/sec
Timing buffered disk reads: 68 MB in 3.06 seconds = 22.22 MB/sec
The first result is dependent on your memory speed. If I put the same hard drive in a system with slower memory, the first result will drop way down. I have PC2100 in my laptop. The second result is low because this laptop has a 4200 RPM drive.
What output do you get from:
hdparm -i /dev/hda
and:
hdparm /dev/hda
Jim Drabb
--
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The box said: "Requires Windows 98/2000/NT/XP or better."
So, I installed LINUX!
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James Drabb JR
Senior Programmer Analyst
Davenport, FL USA
