[ale] Disk access is realllllly slowwwww

[Michael D. Hirsch]

Thanks everyone for your suggestions.  The Compaq smart array whos up as a 
kind of scsi device and I've never gotten anywhere with hdparm and it.  
The devices looks like this: /dev/cciss/c0d0p1
[ root at sulfur ~ ]ls -l /dev/cciss/c0d0p1
brw-rw----    1 root     disk     104,   1 Jan 30 05:24 /dev/cciss/c0d0p1
[ root at sulfur ~ ]

I'll have a try with the iostat suggestion and see if I can figure 
something out.

Michael

On Thursday 29 May 2003 03:50 pm, Michael D. Hirsch wrote:
> We recently built a new server.  It got dual 1.4 GHz processors, lots of
> RAM, and a Compaq Smart Array hardware raid device for storage.  We
> installed RH 9 on it.  It works really well except for one small
> problem--accessing the disk is really slow.
>
> Filename complete at the bach prompt often takes 5 seconds, or so.  It's
> like the drive needs to spin up (which I'm sure is not the case) because
> afterwards it is nice and fast for general reads and rights.  But then
> the next time I do filename completion i a new dir it is slow again.
>
> Has anyone seen this?  I'm wracking my brain trying to imagine a
> scenario that explains this behavior.
>
> Thanks,
>
> Michael
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