General list for discussing Bufferbloat
 help / color / mirror / Atom feed
* [Bloat] latency measurement tools?
@ 2013-02-13 18:23 Eggert, Lars
       [not found] ` <87half8e9u.fsf@toke.dk>
  0 siblings, 1 reply; 2+ messages in thread
From: Eggert, Lars @ 2013-02-13 18:23 UTC (permalink / raw)
  To: bloat

Hi,

what are the preferred measurement tools for latency under load? Are any publicly available or is everyone basically rolling their own?

(I'm esp. interested in tools that can deal with 10 GbE and faster LAN fabrics.)

Thanks,
Lars

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [Bloat] latency measurement tools?
       [not found] ` <87half8e9u.fsf@toke.dk>
@ 2013-02-15 17:11   ` Eggert, Lars
  0 siblings, 0 replies; 2+ messages in thread
From: Eggert, Lars @ 2013-02-15 17:11 UTC (permalink / raw)
  To: Toke Høiland-Jørgensen
  Cc: bloat-JXvr2/1DY2fm6VMwtOF2vx4hnT+Y9+D1@public.gmane.org, Eggert, Lars




Thanks, I'll check it out!

Lars

On Feb 14, 2013, at 0:56, Toke Høiland-Jørgensen <toke@toke.dk> wrote:

> "Eggert, Lars" <lars-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org> writes:
> 
>> what are the preferred measurement tools for latency under load? Are
>> any publicly available or is everyone basically rolling their own?
> 
> Hi Lars
> 
> Usually, people employ netperf and/or iperf to load up a link, and then
> do some sort of latency measurement while the link is loaded (through
> netperf or just straight ping). I'm the author of a python wrapper that
> handles this in a reproducible way, and which also has a prototype of
> the Realtime Response Under Load (RRUL) test incorporated. The wrapper
> is available here:
> 
> https://github.com/tohojo/netperf-wrapper
> 
> (Or just install it through pip with `pip install netperf-wrapper`).
> 
> Also see this page for some example test plots:
> 
> http://www.bufferbloat.net/projects/codel/wiki/RRUL_Rogues_Gallery
> 
> And this one for some general advise on benchmarking (though that is
> mostly relevant at lower bandwidths):
> 
> http://www.bufferbloat.net/projects/codel/wiki/Best_practices_for_benchmarking_Codel_and_FQ_Codel
> 
>> (I'm esp. interested in tools that can deal with 10 GbE and faster LAN
>> fabrics.)
> 
> The RRUL test prototype runs four simultaneous TCP streams in each
> direction which can generally load up pretty much any link on a modern
> Linux kernel (though I haven't tested it personally on high-speed
> networks due to lack of hardware).
> 
> Good luck with the benchmarking. :)
> 
> -Toke
> 
> -- 
> Toke Høiland-Jørgensen
> toke@toke.dk




^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2013-02-15 17:13 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-02-13 18:23 [Bloat] latency measurement tools? Eggert, Lars
     [not found] ` <87half8e9u.fsf@toke.dk>
2013-02-15 17:11   ` Eggert, Lars

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox