[K12OSN] Performance Issue

[Petre Scheie]

Robert Arkiletian wrote:
> On 3/22/06, Liam Marshall <k12ltsplover at stmaurice.mb.ca> wrote:
>> I am currently running K12LTSP (ver 4.4.1 I believe) on a dual xeon 3.06 MHz
>> computer with 4-80 Gb SATA drives configured on a megaraid-4 controller raid
>> 1+0.  2 nics, and 1 is even a gigabyte nic, but all the switches involved in
>> my network are 10/100, so it is not being utilized
> 
> I wonder how your RAID 1+0 SATA would fair against a RAID 1 on a pair
> of 15K rpm SCSI drives. My guess is that the scsi setup would be much
> better. Other  issue could be your mem controllers  FSB bottleneck.
> Your Xeons are working with your single mem controller at  533Mhz or
> 800Mhz depending on the age of your system.  Opterons (with dedicated
> built in mem controllers) have a much better memory throughput and
> latency then the Xeons. But I still think the hard drives speed is
> your problem.
> 
I had similar thoughts about whether he should try a pair of mirrored (RAID 1) 15k RPM 
disks.  On pricewatch.com I found 18GB 15k RPM Compaq disks for less than $50 including 
shipping.  So, perhaps you could get two of those, install them on a separate box and 
use that box as an app server for, say, OOo, just to test it to see if it loads any better.

Petre