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The load on my server is very high, even though there doesn't seem to be much disk activity and the CPU is idle. Using sar, I can see the run queue is getting full, but is there any way to see what's in the run queue?

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What do you mean by "the load on my server is very high" and "the CPU is idle"? Load average should correspond somewhat to CPU load. –  mpez0 Jun 2 '10 at 10:47
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2 Answers

Start with top. It should list all or most of the run queue in the first page. Also 'ps r -A' will list all processes in the run queue.

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ps –ef 

shows every (-e) running process in a full (-f) detailed list

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