[Gllug] finding which process is causing high system load

[Ben Fitzgerald]

Hi,

I have a linux box where the cpu load is high, but this is due to a
constant 80% spent (according to vmstat) in kernel code.

If I use top I can sort by %CPU but this only takes into account user
mode time. If I sort by TIME+ I can see that the process hal is taking
up hours of CPU time (so this field must sum up kernel and user time).

So, I can identify the process, but what if this hadn't been running for
a long time. How can I display a list of processes sorted by % time spent
in user mode + time spent in kernel mode on behalf of the process?

As you can see, when sorting by %CPU hal doesn't stick out, but by TIME+
it's way ahead:

PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
2007 root      16   0  6584 3856 1608 S  0.3  1.5 203:14.26 hald

Thanks in advance for pointers on this,


Ben.

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