🚀 go-pugleaf

In <3980@mutt.mdavcr.mda.ca> young@mdavcr.mda.ca (Shawn Young) writes:
| I was wondering if anyone had any I/O benchmark results for striped disk sets on
| SGI boxes, either for just the striped disks, or relative to single disk
| partitions. I'm looking for something that'll give me an idea of maximum and 
| expected real-world throughput, and a relative measure of increase/decrease in
| performance with respect to individual disks.

Yes, we have them, but there are way too many variables to give you
an answer with the info you have provided.  The numbers depend a
great deal on machine type, and raw vs filesystem, controllers used,
usage patterns, etc. etc.

| Also, I know that the maximum partition size is 8GB, but what happens if I want 
| two partitions: one consisting of 5 1.6GB striped disks, and the other consisting 
| of 4 of the same. Is there any problem with this? What performance penalties, if 
| any, are there?

No problems, no performance penalties per se.  You are likely to be
above the bandwidth of the controllers, so you may get more SCSI
bus contention, or even system bus on some machines.
--
Let no one tell me that silence gives consent,  |   Dave Olson
because whoever is silent dissents.             |   Silicon Graphics, Inc.
    Maria Isabel Barreno                        |   olson@sgi.com