[ngw] High Utilization on GW Server

Mary Van Engelen maryve1 at starpower.net
Sat Dec 8 00:44:56 UTC 2001


Perish the thought!
Been there; done that!
This has been going on for awhile -- it's not so sudden.

At 12/07/2001 06:16 PM, Sean Kirkby wrote:
>More than one of our customers have experienced "sudden" (i.e. "it didn't 
>used to do that") and sporadic (i.e. no pattern and tough to predict) 
>jumps in server utilization (and thus slow NW and GW client performance) 
>which turned out to be caused by rampant viruses on their network (NIMDA 
>in particular).
>
>Infected machines were replicating infected files massively and 
>sporadically and causing server utilization to spike pretty bad.
>
>FWIW.
>
>--sk!
>
>-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>Sean Kirkby
>Concentrico, Inc.
>P: (801) 221-7606 x204
>W: <http://www.Concentrico.net>www.Concentrico.net
>-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>Custom Software
>Expert Solutions
>========================
>
> >>> maryve1 at starpower.net 12/07/01 04:03PM >>>
>Hmmm......interesting.  The high utilization just might have coincided with
>our install of Z3fD.
>
>Mary
>
>At 12/07/2001 04:59 PM, Ray Diers wrote:
> >Have a look at Novell TID # 10057998.  We applied the TID and utilization
> >dropped immediately.  Client workstations noticed an improvement in
> >response.  If we rebuild a PC and forget to make this change utilization
> >jumps up again.
> >
> >Ray
> >
> >
> >
> > >>> maryve1 at starpower.net 12/07/01 02:59PM >>>
> >Help!
> >We've been experiencing problems with slow response in GW.  The problem
> >appears when there is high utilization on the email server where the post
> >office resides. There doesn't seem to be a particular time of day when this
> >happens, so I've ruled out indexing as the culprit.
> >
> >Email Server: GW 5.5.4 non-EP with primary Domain/MTA/POA and an API
> >gateway on a NW 4.2 server (280 mailboxes).
> >Gate Server: There's a secondary domain/MTA on another server that is
> >running GWIA and WebAccess.
> >
> >I did find that there was a high count (9,651) of "no ECB's available"  on
> >the LAN card of the email server.  So last night I changed  several NW 4.2
> >set parameters (minimum and maximum packet receive buffers, directory cache
> >buffers and service processes, as well as timing parameters related to all
> >three).  The changes I made were based on suggestions made in the October
> >1999 Appnote for tuning, optimizing and sizing GW 5.5.
> >
> >I've been watching it all day.  A few minutes ago I noticed a slow response
> >while creating a message and ran to the server just in time to watch the
> >number of directory cache buffers increase. High utilization stopped almost
> >immediately. The "no ECB's available" count is still at zero.  I've seen no
> >increase in packet receive buffers either.
> >
> >So, what's the deal with the directory cache buffers? I'm off to the KB to
> >do some research on it, but thought some of the great minds here might have
> >some clues as to what I should do next.
> >
> >Thanx,
> >Mary
> >
> >
> >
> >
> >
> >
> >
> >--
> >Visit <http://www.ngwlist.com>http://www.ngwlist.com for help with the list.
> >Visit <http://www.concentrico.net>http://www.concentrico.net for 
> GroupWise, NDS, or DirXML development
> >needs and product information.
> >
> >
> >
> >--
> >Visit <http://www.ngwlist.com>http://www.ngwlist.com for help with the list.
> >Visit <http://www.concentrico.net>http://www.concentrico.net for 
> GroupWise, NDS, or DirXML development
> >needs and product information.
>
>
>--
>Visit <http://www.ngwlist.com>http://www.ngwlist.com for help with the list.
>Visit <http://www.concentrico.net>http://www.concentrico.net for 
>GroupWise, NDS, or DirXML development needs and product information.




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