CPU Critical

[Anthony Montibello]

NC_NEt supports both checking _total  Conter of Process
as well as WMI querys, where the only syntex needed for the WMI query is the
actually WMI Select Statment.

Windows always induces a High load on User logins and Starting apps,
so if you test for Total Process Load or System Idle in a critical Position
for over a few minutes before throwing alerts
(this is not an issue since the Alerts been up for several days in your
instance)
on a side note I seen Windows Automatic Update induce Unknown Loads
typically starting wendsday- thurday if the update install is not completed
(when it requires a reboot).

To spot the bad Process you should try a Select top 1 through WMI, (i did
not test this)
But I am not sure how well the WMI query language interprets TOP
(NC_NEt passes a WMI query starting with Select directly to the WMI
Subsystem as opposed to doing anything itself.)

Tony (Author of NC_Net)

On Mon, Feb 16, 2009 at 9:49 AM, Steve Burton
<steve at sliderule.demon.co.uk>wrote:

> Jon Angliss wrote:
> > On Fri, 13 Feb 2009 00:54:34 -0000, "Martyn" <martyn at chetnet.co.uk>
> > wrote:
> >
> >
> >> Hi All
> >> I have noticed whilst monitoring my NT server the CPU load level has
> been at
> >> critical status for 3d 8h 29m 32s and sitting at 100%,  this is good
> news
> >>
> > >from a monitoring point of view as it was spotted, however I need to
> solve
> >
> >> it.
> >>
> >
> >
> >> I know I can just jump on to my server and look at the processors I
> would
> >> find what was hogging it but is there a plugin/module or add-on that I
> can
> >> use to see what processors maxing out.
> >>
> >
> > If you're any good at scripting, you can tinker with the WMI script
> > from here:
> >
> >
> >
> http://www.databasejournal.com/features/mssql/article.php/3560366/Monitor-CPU-Usage-of-All-Running-Processes--Part-I.htm
> >
> > It's a WMI script that will walk through all the processes, and return
> > the CPU usage.  With some tweaking, you can probably sort the results,
> > add the values, and use it as a CPU counter, and return the top
> > process as part of the check.
> >
> Also, if you only want the _Total_ processor usage and have NSCP
> installed you can access the perfmon counter with a check_command like:
>
> define command{
>       command_name check-processor-nscp
>       command_line $USER1$/check_nt -H $HOSTADDRESS$ -v COUNTER -l
> "\\Processor(_Total)\\% Processor Time","Processor Used %2.f%%" -p 12489
>       }
>
> (NB I run nscp on port 12489 hence the -p argument).
>
> Steve.
>
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