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From: Jonathan Morton <chromatix99@gmail.com>
To: rick.jones2@hp.com
Cc: bloat@lists.bufferbloat.net
Subject: Re: [Bloat] Measuring latency-under-load consistently
Date: Sat, 12 Mar 2011 03:44:05 +0200	[thread overview]
Message-ID: <0E7F16C4-58DA-43FE-AB84-A3BCBBB6D905@gmail.com> (raw)
In-Reply-To: <1299892197.2087.2061.camel@tardy>


On 12 Mar, 2011, at 3:09 am, Rick Jones wrote:

>>> You may be able to get most of what you want with a top-of-trunk netperf
>>> "burst mode" TCP_RR test. It isn't quite an exact match though.
>> 
>> I don't really see how that would get the measurement I want.
> 
> Then one TCP_STREAM (or TCP_MAERTS) and one TCP_RR with all the RTT
> stats and histogram enabled :)

Closer, but that doesn't seem to be self-tuning - and often one bulk flow doesn't fill the pipe any more.

I want to scale up to FTTH and GigE, and down to V.34bis and GPRS - all of which are (still) relevant network technologies today - without any error-prone parameters to enter except the identity of the server.

Ideally it should be robust enough for use by random ISP technicians, regulatory officials and end-users, and the output should be accordingly simple to interpret.

So yes, code reuse is great, but only if it does what I need it to.  I need the practice anyway.  :-)

 - Jonathan


  reply	other threads:[~2011-03-12  1:44 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-12  0:00 Jonathan Morton
2011-03-12  0:13 ` Rick Jones
2011-03-12  0:45   ` Jonathan Morton
2011-03-12  1:09     ` Rick Jones
2011-03-12  1:44       ` Jonathan Morton [this message]
2011-03-12  3:19 ` richard
2011-03-12  3:52   ` Jonathan Morton
2011-03-12  4:04     ` richard
2011-03-12 21:57       ` Jonathan Morton
2011-03-12 22:23         ` richard
2011-03-12 23:58           ` Jonathan Morton
2011-03-12 22:21 ` Fred Baker
2011-03-12 23:03   ` Jonathan Morton
2011-03-13  6:54     ` Fred Baker
2011-03-13 14:24       ` Jonathan Morton

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