Re: System Cpu Between 50-70% and need to find out why

Kris Kennaway <[email protected]> Mon, 23 Apr 2007 23:52:49 -0400
Newsgroups gmane.os.freebsd.devel.smp
Message-ID <[email protected]>
On Mon, Apr 23, 2007 at 10:50:47PM -0400, Paul wrote:
> 
> >It was almost certainly what I said above.  Too bad you weren't able
> >to follow through with it.
> >
> >Kris
> 
> Hi Kris,
> 
> I was running the make depend for over 1 hour and it showed no end in 
> sight. I figured to run that to the finish and the full make it might 
> have taken all day so I really had no choice :)

Odd, I suspect you were doing more than just building a kernel, which
only takes a few minutes to build completely (even on a quota-enabled
machine ;)

> I will test this and see if it fixes the problem and confirm if this 
> is the culprit (or not).
> 
> I am surprised to hear this is all a function of the Quota problem 
> you mention. I suppose nobody is using this anymore or is there a 
> better system being used?

It's just a left-over from the post-4.x SMP rewrite that didn't get
addressed until recently.  In the grand scheme of things quotas are
relatively infrequently used, so it was a higher priority for the
developers to work on other things first.  As I mentioned, fixing this
performance problem with quotas has now been completed in 7.0 and it
will probably make it back into 6.x before 6.3.

Kris
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