On 05/20/10 08:36, Mike Gerdts wrote:
On Thu, May 20, 2010 at 6:46 AM, tester<solaris.ident...@gmail.com> wrote:
Hello,
We had a situation on a t5140 running solaris 10 where the load average from
prstat were 20-25,30-40,60-80.
The T5140 presumably has two 8 core x 8 strand processors. On this
box, a load average of 128 indicates that there is work for all of the
CPU strands. That is, a T5140 with a load average of 128 has a
saturated CPU, just like a Netra T1 with one UltraSPARC IIi processor
has processor saturation when the load average is 1.
Put another way, a load average of 20 means the processor is 15.6%
utilized. Of course this is simplistic - you need to look at other
factors, particularly corestat (use google).
Perhaps we should consider a new load average that is normalized to
the number of CPUs....
- Bart
--
Bart Smaalders Solaris Kernel Performance
bart.smaald...@oracle.com http://blogs.sun.com/barts
"You will contribute more with mercurial than with thunderbird."
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