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Old 10-14-2003, 03:43 PM   #1
WeNdeL
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IO problem in relation to PERL


Or so I think...

We have a Netfinity 7000 M10 with the following specs:

4 Pentium II (Deschutes) 400 MHz processors each w/1024KB's of cache
2 Gigs of RAM
3 10K RPM SCSI HDD's
1 15k RPM SCSI HDD's

We are trying to utilize a certain PERL program that is acting as a portal (sort of) for our companies day-to-day computing needs. That is all this box is being used for. User's SSH to this box and invoke an instance of said program.

The problem is this...

This program runs a little slow... When an exact copy of this program is thrown on a plain old workstation (a box with a 450MHz cpu and maybe 128 MB's of RAM), it runs much faster than on the Netfinity. Now aside from turning off all unwanted daemons and processes, I haven't done much in the way of tuning this box.

Edit: The perl code in question lives on the 15K RPM SCSI HDD by the way...

I have done some digging around to try and figure out what the issue may be but have come up with a good deal of ambiguous info.

I am assuming, as is my boss, that there is an IO problem in relation to the disks...

Any ideas what the problem may be? Any pointers on tuning servers with respect to specific applications. I am waiting on an O'Reilly book at the moment but need to do some digging in the meantime. Care to help?

Thanks...

Last edited by WeNdeL; 10-14-2003 at 03:50 PM.
 
Old 10-14-2003, 03:48 PM   #2
david_ross
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If you think it is a disk problem then you could try configuring you disks with hdparm.

You may get more of an idea why it is running slow if you run it with strace.
 
Old 10-14-2003, 03:51 PM   #3
WeNdeL
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I will do this!

hrm...


/me heads to man page
 
  


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