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Date: Wed, 16 Jul 2008 18:11:04 -0700
From: Andrew Sharp <andy.sharp@onstor.com>
To: "Rich LaReau" <rich.lareau@onstor.com>
Cc: "dl-cstech" <dl-cstech@onstor.com>
Subject: Re: FP cpu at 99%
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On Wed, 16 Jul 2008 17:10:23 -0700 "Rich LaReau"
<rich.lareau@onstor.com> wrote:

>  
> Hi Andy,
> 
> I've been told that while this is not a percentage, we should start to
> be concerned if this stays above 0.95.  I've never seen this number go
> above 1, and don't think it's possible. 

It's quite possible to go well over 1; but it's irrelevant because it's
a total red herring. At one point we were going to rip this out because
there is no way to interpret this number.

> If it's a total red herring then I'll tell the customer to not worry
> about it-- but it's a site that's recently had BSD reboots with no
> other clues.. 
> 
> Rich
> 
> 
> -----Original Message-----
> From: Andy Sharp 
> Sent: Wednesday, July 16, 2008 5:05 PM
> To: Rich LaReau
> Subject: Re: FP cpu at 99%
> 
> On Wed, 16 Jul 2008 16:46:51 -0700 "Rich LaReau"
> <rich.lareau@onstor.com> wrote:
> 
> > 
> > A site reports that they have been "stuck" at 99% FP CPU usage on
> > one node for the past 15 hours.  Vsvr stats show normal throughput,
> > and no
> 
> > other obvious errors in the elogs.  We did note that they seem to
> > run the "ldavg" command every 15 minutes.
> > 
> > What does it mean when it's pegged like this?
> > 
> > <nfxshCmd cmd="stats show ldavg" rc='0'>
> >    NCPU    ACPU     FP1     FP2      FC
> >   0.143   0.041   0.999   0.999   0.021
> > </nfxshCmd>
> 
> That's not a percentage, it's a number, and therefore, it's at less
> than '1' which means -- well, it doesn't mean anything -- relatively
> idle, most likely.
