how to analzye collect data.

[jack wu_2]

Hi
I want to analyze the system performance problem by collect tools.

I find CPU is very busy, but memory and disk I/O isn't busy.

The SYSC is 32927 and CS is 12670 , maybe this is root cause of the poor system performance.
but i don't know how to comfirm why and which process cause SYSC and CS.

very thanks

The collect data about CPU.
# CPU SUMMARY
# USER SYS IDLE WAIT INTR SYSC CS RUNQ AVG5 AVG30 AVG60 FORK VFORK
49 23 29 0 1193 32927 12670 3 3.94 3.90 3.68 41.70 0.00
# SINGLE CPU STATISTICS
# CPU USER SYS IDLE WAIT
0 46 23 31 0
1 49 24 27 0
2 52 21 28 0
3 49 23 29 0

[Joris Denayer]

Jack,

The number of System Calls and ContextSwitches are systemwide and I can assure you that I have seen already much higher values.
Runqueue and load-averages are perfect for a 4 CPU system.

You didn't mention the network. Check for saturated networks, collisions

Do you have objective figures to prove the poor performance ?

Joris

[Hein van den Heuvel]

I agree with Joris. At first glance this all appears fine. Is there a reason to worry, or is the system simply doing it's job? This biggest indication of problem in the information provided it the high system time. You may want to try to understand what the system is doing. For that you could use the standard kprof tool, but I'd recommend downloading DCPI from the Tru64 sites.

Hein.