Re: [nv-l] Hardware options

I think you would be crazy moving to a single CPU based box. Individual NetView processed could quite easily consume close to 100% of one CPU yet the overall CPU utlitization could still be less than 20%. The NetView processes are not multi-threaded. So it a performance benefit if you can allow a process such as trapd to hog a CPU during a trap storm and know that your other NetView processes are still serviced by the other CPUs on your server.

I think a H80 with 4 CPUs would be hard to beat. Is it overkill ? Well I think that depends on a whole heap of other factors that mentioned in your note such as the size of your managed network, trap rate, number of users, netmon polling parameters, snmp data collections. The weakness *if any* on your H80 could be the 2GB of memory.

Don't do it :-)

Gareth Holl
Staff Software Engineer
gholl AT us.ibm DOT com

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

"Treptow, Craig" <Treptow.Craig AT principal DOT com>

01/02/2003 05:23 PM

To: "NetView List (E-mail)" <nv-l AT lists.tivoli DOT com>
cc:
Subject: [nv-l] Hardware options

Hi. Today we run AIX 5.1 on an H80, 4 CPU, with 2 GB RAM. The group that maintains the hardware has purchased two new pSeries 670's. We are considering moving to those, but if we do, we'd be allocated 1 CPU and 2 GB RAM.

The hardware today is not taxed, and runs Netview quite well. In general it is about 95% idle. I just restarted netmon, and see it using about 30% CPU. So, it appears that we could easily live in the new machine, but if there were a problem, there wouldn't be money to spend on hardware upgrades.

The machine only runs Netview, a caching DNS server, and the other Tivoli managed node software (oserv, etc)

My gut feeling is that I should not move to one CPU, but view 2 CPU's as a minimum. I think they'd be willing to do this.

Does anybody else have some real world experience with the new pSeries 670 (Regatta) hardware, or Netview's use of multiple CPU's that would be helpful?

Thanks for anything you can share.

Craig

A dozen, a gross, and a score,
Plus three times the square root of four,
Divided by seven,
Plus five times eleven,
Equals nine squared plus zero, no more.

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