Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!weretis.net!feeder1.news.weretis.net!news.swapon.de!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: General Schvantzkoph Newsgroups: comp.os.linux.networking Subject: Re: Recommended bandwidth measureing tool for 10G Date: 27 Jul 2011 23:31:27 GMT Lines: 34 Message-ID: <99blefFqi1U4@mid.individual.net> References: <9991frFqi1U1@mid.individual.net> <99ad2nFqi1U2@mid.individual.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Trace: individual.net vGJZbmYBXBKwTavSLS4swQr1w18GbJqcgeTy6VlEr9OHw/PE8S Cancel-Lock: sha1:/lGzRuZfVbIAQhel5fFDzykCYY0= User-Agent: Pan/0.133 (House of Butterflies) Xref: x330-a1.tempe.blueboxinc.net comp.os.linux.networking:442 On Wed, 27 Jul 2011 16:33:46 +0000, Rick Jones wrote: > Jorgen Grahn wrote: >> On Wed, 2011-07-27, General Schvantzkoph wrote: >> > On Wed, 27 Jul 2011 08:12:47 +0000, Jorgen Grahn wrote: >> > >> >> On Tue, 2011-07-26, General Schvantzkoph wrote: >> >>> What's the best tool to measure the bandwidth between NIC cards. I >> >>> need to measure the bandwidth between 10G NICs. >> >> >> >> What do you mean? That you have two NICs, and want to measure the >> >> mean bits/s are going from A to B over a certain time period? >> >> >> >> >> > Yes that's it exactly. I'm going to try netperf, that looks >> > promising. > >> Isn't netperf a traffic generator? If you just want to see what's >> happening in terms of bits/s, you can use e.g. ifstat(1), or even use >> ifconfig and calculate the average yourself. > > That is correct, netperf is a traffic generator not a traffic monitor. > It will generate traffic between A and B and tell you about the result. > > As there is more to networking than just bandwidth, I'll suggest TCP_RR > tests in addition to TCP_STREAM. > > happy benchmarking, > > rick jones What I want to do is be able to generate traffic at wire speed. I'm designing a piece of hardware that has a couple of 10G ports on it and we need to be able to test it under maximum load.