RE: [nv-l] Does wpostemsg causes stress to NetView server

2002-08-28 18:09:29
Subject: RE: [nv-l] Does wpostemsg causes stress to NetView server
From: "Karl Prinelle" <Karl.Prinelle AT elyzium.co DOT uk>
To: <nv-l AT lists.tivoli DOT com>
Date: Wed, 28 Aug 2002 23:09:29 +0100
You don't mention which version of framework or tec you have installed, but if it is a recent one (tec 3.7.1, fw 3.7.1) then you can use the tuning in the tecad_nv6k.conf to control how fast you want the adapter to send events - this is also true to a lesser extent in previous versions.  This would allow you to manage the hit on your NV server when TEC comes back up.  Indeed it will allow you to control how much pain NV causes TEC when it restarts! 
Check out the TEC Adapters guide PDF - it goes through a whole load of parameters.  Some of these may be useful (explained in the PDF) BufEvtMaxSize, BufferEvents, BufferFlushRate, ConnectionMode, FilterCache (be careful about impact on TEC rules!), RetryInterval.
Karl Prinelle
Tivoli Certified Consultant
Elyzium Ltd
Enterprise Systems Management Consultants
Mobile: +44 (0)7813 189198

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-----Original Message-----
From: Gareth Holl [mailto:gholl AT us.ibm DOT com]
Sent: 27 August 2002 19:33
To: nv-l AT lists.tivoli DOT com
Subject: Re: [nv-l] Does wpostemsg causes stress to NetView server

Re-sending to list.......

I believe wpostemsg and postemsg will both cache events if the TEC server is not available. NetView's nvserverd certainly caches events if the TEC Server is unavailable or if you have a communications problem. NetView's nvserverd basically uses the same code as postemsg to forward events to a TEC server. So you may simply need to re-check your configuration to see why you are not caching.

I think you would be hard pressed to measure a difference between wpostemsg and postemsg. wpostemsg uses the Framework's oserv to oserv communication's path, where as postemsg simply pipes it across an IP socket as a standard tcpip packet. If I was to guess, I would think there would be more overhead using wpostemsg since the oserv to oserv communuications still uses tcpip but obviously with a lot more encapsulation. The overhead would be on your tcpip stack if anywhere.

I hope this helps,

Gareth Holl
Software Engineer
gholl AT us.ibm DOT com

IBM Software Group - Tivoli Brand
Research Triangle Park,  North Carolina.

anand anupam <ananda AT bharatpetroleum DOT com>

08/27/2002 02:50 AM

        To:        nv-l AT lists.tivoli DOT com
        Subject:        [nv-l] Does wpostemsg causes stress to NetView server



We are having NetView 6.0.2 on AIX4.3.3 which is being integrated to TEC.

We started with postemsg command to send alerts to TEC but now we wanted to do wpostemsg instead of postemsg just to take care of missed events when TEC is not available. As wpostemsg will queue the events when TEC is not available and will deliver when TEC becomes available.

My concern is that wpostemsg will further stress the NetView server which is already having performance issues. Can anybody suggest is wpostemsg will really stress the NetView or not? And if yes, what is the work around?


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