[ale] Disk access is realllllly slowwwww

[James P. Kinney III]

Check the settings with hdparm. But I'm not sure that will be useful
with the hardware raid. It does sound like there is a spin up delay or
maybe a buffer fill up issue. 

Most of the hardware raid devices I worked with have a boot up config
area that allows some performance tweaking. I don't know about the
Compaq Smart Array as I've not used that one. The Dell equivalent has a
quasi-bios config application that can set things like spin down time
(why would it even be an option to spin down a raid drive that doesn't
support hotswap??) and other tweaky things.

On Thu, 2003-05-29 at 15:50, 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
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://www.ale.org/mailman/listinfo/ale
-- 
James P. Kinney III          \Changing the mobile computing world/
CEO & Director of Engineering \          one Linux user         /
Local Net Solutions,LLC        \           at a time.          /
770-493-8244                    \.___________________________./
http://www.localnetsolutions.com

GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics) <jkinney at localnetsolutions.com>
Fingerprint = 3C9E 6366 54FC A3FE BA4D 0659 6190 ADC3 829C 6CA7 

 This is a digitally signed message part