[K12OSN] bottleneck question

[Les Mikesell]

On Fri, 2004-09-10 at 14:15, Liam Marshall wrote:

> just ran vmstat 5 again.  am sitting at 0's for si so bi and bo says 
> 198  cpu id says 0   Can you tell waht the likely problem is there?

That shows that at that moment, the CPU was the bottleneck (0% idle).
That's not a huge amount of disk activity either so adding RAM won't
help much even to increase the disk buffering.  'top' will show
single processes using a lot of CPU.  'ps ax >file' will capture
a snapshot of all currently running processes along with their
total CPU time.  If you review the file you may find things that
don't need to be running at all.   A faster server or splitting
some of the users or apps off to a different server may be the
only real answer.

---
  Les Mikesell
    les at futuresource.com