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Re: 20000405: how to troubleshoot pbuf_flush occurrances

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  • Subject: Re: 20000405: how to troubleshoot pbuf_flush occurrances
  • Date: Thu, 6 Apr 2000 15:23:42 -0600 (MDT)
On Wed, 5 Apr 2000, Unidata Support wrote:

> 
> ------- Forwarded Message
> 
> >From: "Molenar, Deb" <address@hidden>
> >Subject: re: pbuf_flush
> >Organization: CSU/CIRA
> >Keywords: 200004051533.JAA20235 LDM pbuf_flush
> 
> On April 3, Rob Kambic wrote:
> 
> >The pbuf_flush 15 means that the ACTION ie ( FILE, STDIO, PIPE, etc )
> >could not write to the destinations because the resource was not available
> >at that time or it was blocked.  The log entry ususally occurs when disk
> >activity is at it's peak for some reason.  It could be the LDM doing many
> >disk writes or another process tying up the disk.  
> 
> >If this occurs a bunch of time, one could start to loose data.  Then it's
> >time to determine the reason for the pbuf_flush entries.
> 
> I started seeing numerous pbuf_flush entries in our logs on 4/2.  We haven't
> changed in our ingest, so can you elaborate on how to determine the reason
> for the entries?


Debra,

The reason for the new occurance of the pbuf_flush entries could be the
increase in data of some of the models. You might experiment with
eliminating some of the decoder processing and then see if the messages go
away. If the machine can't handle the load, you might have to off load
some of the processing to another machine. 

Robb...



> 
> Thanks.
> 
> ___________________________
> Debra A. Molenar          address@hidden
> NOAA/NESDIS/RAMM  E-RA2
> phone:  970-491-8447    fax:  970-491-8241
> 
> 
> 
> ------- End of Forwarded Message
> 

===============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
address@hidden             WWW: http://www.unidata.ucar.edu/
===============================================================================