[Orca-users] Re: page scan rate always zero -- sar says otherwise (Solaris 2.5.1)

Blair Zajac blair at akamai.com
Fri Mar 24 10:08:33 PST 2000

I think I found the problem.  In SE for Solaris 2.5.1 the p_vmstat
object has an "int scan" structure and in SE for Solaris 2.6 and
above it is a "double scan".  So the printf is failing for the
Solaris 2.5.1.  I haven't tried this yet, but the fix is simple,

  put_output("scanrate", sprintf("%8.3f", pvm.scan));


  put_output("scanrate", sprintf("%8.3f", (double) pvm.scan));

Let me know how this works.

Regarding p_vmstat versus vmstat, p_vmstat is an abstraction
around a lot of data and provides the number of XXX's per
second.  The vmstat and other data structures just provide
a count.  The p_* classes will take the count before and
after a time interval and divide the count difference by
the interval to get the rate......


Rick Tessner wrote:
> From: Rick Tessner <rick at dingle.myra.com>
> On Thu, 23 Mar 2000 12:16:13 PST, Blair Zajac wrote:
> >From: Blair Zajac <blair at akamai.com>
> >
> >I'm seeing the same thing on my Solaris 2.5.1 systems.
> >
> >You may want to email the SE mailing list for help at
> >
> >se-feedback at chessie.eng.sun.com
> Good Morning All,
> I haven't contacted the SE folk yet (still trying to figure out SE and
> put together a little test script), but I did find something interesting ...
> One of the example SE scripts, vmstat.se, does show the proper page
> scan rate (/opt/RICH*/bin/se vmstat.se -- the "sr" column).  The
> "vmstat.se" uses the "vmstat" structure rather than "p_vmstat".
> The "vmstat" structure seems to work under both Solaris 2.5.1 and
> 2.6 (don't know about 7).
> Does anyone out there know what the difference between the p_vmstat & vmstat
> structures are and why p_vmstat is used over vmstat?
> --
> Rick Tessner    rick at myra.com
> MYRA Systems Corp. Fone: (250) 381 1335 x125  Phax: (250) 381 1304
>                    Cell: (250) 885 9452
> "If you can't think of something nice to say, come sit beside me."
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