ROOTVG

could someone help!
I have Gig-Ethernet network connection but I am not sure if we are utilizing, so I would like to find the maximum bandwith we're using during heavy traffic, is there a way to measure the network speed in Mb/sec??
Thanks for your time.

Depends on what you want. If what you are looking for is the amount of traffic that is going over a specific interface, you can use netstat to get the raw numbers for packets sent and compare it over time.

A better solution is nmon. It is a free performance monitoring tool from IBM (sort of the swiss army knife of monitoring utilities). There is a link to it somewhere on the rootvg site.

The topas utility might also give I/O rates per interface (I don't remember if it breaks it down that way).

If on the other hand you are looking for how well tuned the interface is, you can use one of the many network benchmark tools. A simple one is ttcp. Another one is IOBench.

nmon is a nice tool. I havent used it myself as I amnot usually interested in graphs or histories - but the here and now. But it is definitely a step up from standard sar data collection - if you are having to report to people who read graphs well, but not tables (standard manager joke). In other words, nmon integrates well with excel for making graphics, and other desktop reporting tools.

nmon is not from IBM. It was developed by an IBMer, Nigel Griffths (hope I spelled his name right).

btw. I use topas and perfpmr. netpmon is also a standard AIX tool for measuring network performance.

You're correct about the origin of nmon. It isn't an officially supported IBM product and you use it at your own risk.

A great way to monitor network statistics is on the network equipment itself via a tool like MRTG.

http://www.mrtg.org/

This gives accurate results and makes all the eye candy charts you could ever want.  ;)

Thanks for all your time and response.