Hello
I have some desktop linux machines that have periods of extremely high
system time (30-90%) with no obvious cause. The users see it as a hang
or a freeze to the point of 10sec for a key press to register. it comes
and goes seemingly randomly but only lasts max about 1-2 min.
What I'm after is any hints on how to track down whats causing this.
Symptoms
- load average is low (sub 1)
- No process is consuming a lot of cpu (from top)
- No swapping is occurring at the time
- plenty of free memory
- no/low IOwait%
- IRQ% is 0
- Still has Idle available
- nothing in dmesg
Any help or investigation tips would be appreciated
Thanks
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