Anyone have any performance data on Intel SMP under Linux ?

Jacob W. Hawkins

Feb 8, 2002

I recently acquired a four-way Xeon box that I'm putting RedHat on tonight -
does anyone have any performance data for Hercules and how it handles
multiple processors ? I assume I'm going to see a healthy increase in
performance - MVS 3.8j cold IPLs fully in about a minute on my Celeron 400
uni, and the highest MIPS I've gotten out of it in a sysgen (I guess that's
a good comparison) is about 2.9-3.1. Is there a seperately built
multiprocessing version, or does Hercules support it unilaterally ?

jx



[Non-text portions of this message have been removed]

2:18 pm

Re: Anyone have any performance data on Intel SMP under Linux ?

bpcvdhelm

Feb 8, 2002

Hi Jacob,

I have a dual Pentium and unfortunaly the ipl won't go any faster.
IPLing is done on one processor. In a later stadium the other
processors are started up. More procs means you can run more tasks
concurrently. It's the same as in the real world. a Machine with 1
fast processor is more nice than a machine with 2 of half the speed.
You can have more processors, but a task can only run on a single
proc.

PS: Greg Smith has done a great job on SMP, you now can see 100%
utilization of all CPUs, when you have the same amount of concurrent
tasks as procs.

Bernard

10:28 pm

Copyright 2002