System mode CPU time in Linux
Posted on 2009-07-09
I am analyzing performance on a linux server and have noticed that a majority of the CPU time is allocated to system mode execution. Normally (ie, in Windows for me), I would start to look at whether drivers are up to date, fragmentation was an issue, etc. My question is - is there anything to tune on a Linux system that shows a high system to user mode execution ratio? Or, is that just the way it is and I should look elsewhere for problems?