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Date:      Thu, 16 Nov 2000 20:28:35 +0000 (GMT)
From:      George Reid <greid@ukug.uk.freebsd.org>
To:        Raymond Law <flaw@vt.edu>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: FreeBSD VM
Message-ID:  <Pine.BSF.4.21.0011162023130.8668-100000@sobek.nevernet.net>
In-Reply-To: <4.3.0.20001116105701.00b69320@mail.vt.edu>

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On Thu, 16 Nov 2000, Raymond Law wrote:

> majflt doesn't increase when a process is generating page faults.  Instead, 
> the swapper process (pid 0) gets all the page faults and it is the same as 
> the page faults given by cnt in vmmeter.c.  Why is this happening?  Is 
> there a way to get the number of page faults generated by a SINGLE process?

Yes.
ps -o majflt -p <pid>

The code which increments the number of page faults for a given process is
found in /sys/vm/vm_fault.c (circa line
856): curproc->p_stats->p_ru.ru_majflt++;

> The above doesn't get increased.

Yes, it does - certainly in 5.0-CURRENT and a quick look at the CVS
repository reveals this code has been present for over 6 years.

"And then it comes to be that the soothing light
   at the end of your tunnel was just a freight
            train, comin' your way."

      George Reid * greid@ukug.uk.freebsd.org



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