nanog mailing list archives
Re: Speed Testing and Throughput testing
From: Richard A Steenbergen <ras () e-gerbil net>
Date: Mon, 2 Nov 2009 18:02:04 -0600
On Mon, Nov 02, 2009 at 01:30:18PM -1000, Michael Painter wrote:
Nathan Ward wrote:On 3/11/2009, at 10:56 AM, Mark Urbach wrote:Anyone have a good solution to get "accurate" speed results when testing at 10/100/1000 Ethernet speeds?An NDT server?... such as: http://ndt.anl.gov:7123/
I just tested that server, and couldn't get any results which were even vaguely close to accurate. Of course it probably didn't help that the only routes I could find to the test server were either Chicago - Palo Alto - Chicago or Chicago - Ashburn - Chicago, but this doesn't seem like it would ever be useful for testing gigabit anything. For end user testing, I've actually seen reasonable results from speedtest.net. http://www.speedtest.net/result/610596179.png for example, better than ndt.anl.gov at any rate. :P For quick and dirty high speed Internet testing up to a gigabit, this is my favorite standby (it often helps to eliminate your local disk from the equation by writing the downloaded file to /dev/null too):
fetch -o /dev/null http://cachefly.cachefly.net/100mb.test
/dev/null 100% of 100 MB 102 MBps But the best (and conveniently enough the most commonly used) tool for in-depth high speed testing was already mentioned, iperf. Another useful tool if you're trying to troubleshoot tcp issues is http://www.tcptrace.org/. -- Richard A Steenbergen <ras () e-gerbil net> http://www.e-gerbil.net/ras GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)
Current thread:
- Speed Testing and Throughput testing Mark Urbach (Nov 02)
- Re: Speed Testing and Throughput testing Jack Carrozzo (Nov 02)
- Re: Speed Testing and Throughput testing Nathan Ward (Nov 02)
- Re: Speed Testing and Throughput testing Azher Mughal (Nov 02)
- Re: Speed Testing and Throughput testing Michael Painter (Nov 02)
- Re: Speed Testing and Throughput testing Richard A Steenbergen (Nov 02)
- Re: Speed Testing and Throughput testing Jon Meek (Nov 02)
- Re: Speed Testing and Throughput testing Kevin Oberman (Nov 07)
- Re: Speed Testing and Throughput testing Andreas Ott (Nov 02)
- Re: Speed Testing and Throughput testing Christopher Morrow (Nov 02)
- RE: Speed Testing and Throughput testing Benoit VANNIER (Nov 03)
- Re: Speed Testing and Throughput testing Jason Biel (Nov 03)
- Re: Speed Testing and Throughput testing Bret Clark (Nov 03)
- Re: Speed Testing and Throughput testing Jason Biel (Nov 03)
- Re: Speed Testing and Throughput testing Simon Horman (Nov 04)
- Re: Speed Testing and Throughput testing Jason Biel (Nov 05)
- Re: Speed Testing and Throughput testing Jason Biel (Nov 03)