| Re: high system cputime % [message #25309 is a reply to message #22810] |
Wed, 19 December 2007 19:30  |
dev
Messages: 1693
Registered: September 2005
Location: Moscow
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Senior Member |
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if the kernel was loaded with oprofile=2 (I don't remember this exactly), then you can use oprofile tool to collect some statistics about where CPU is spent most.
also plz check softirq time reported by top.
but generally there is nothing bad is usually in system time.
For example, when you do lots of networking it takes lots of cpu system time as well. Another example: simple application, calling some syscall with wrong arguments in a loop will result in 99% CPU system time (as well as app doing good syscalls, but non-blocking and spending most of the time in kernel) 
[Updated on: Wed, 19 December 2007 19:30] Report message to a moderator |
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