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vmstat and waiting kernel threads

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Operating Systems Solaris vmstat and waiting kernel threads
# 8  
Old 05-05-2009
This is a part of my whole problem
As u can see in the vmstat output, 39 waiting processes are there and also the cpu is idle, when I check using Top command, i see that there is approximately 2 gb of RAM free which is not being used. Also cpu is approximately 80% idle.

Some(~10, which is very less, we generally run 30 of these parallely) really cpu intensive tasks have been made to run on this machine and their speed is very slow. neither are they executing fast(using the available cpu), nor are the waiting processes running. what is the meaning of this?

also from iostat output, i don't see lot of io happening.
# 9  
Old 05-05-2009
Also, if those threads/processes are dormant, can't we kill them? r they taking some system resources which i'm not able to see?

why is it that my other cpu intensive tasks very slow?
# 10  
Old 05-05-2009
The swapped out processes use no resources and can't be the reason explaining the performance issue you are complaining of. There would be no visible gain in killing them. You can however disable the services if you do not make use of them.

The vmstat output you posted doesn't show any of the processes your are talking about lacking CPU time.

You server is mostly idle. It doesn't seems to really run CPU intensive tasks in parallel.

Did you look at I/O statistics ?
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