[Bloat] I am unable to pinpoint the source of bufferbloat

[Forums1000]

Hi everyone,

Can anyone give some tips on how to diagnose the sources of bufferbloat?
According to the Netalyzr test at http://netalyzr.icsi.berkeley.edu/, I
have 550ms of upload bufferbloat. I tried all kinds of stuff on my Windows
7 laptop:

- For the Intel(R) 82567LF Gigabit Network Connection, I put receive and
transmit buffers to the lowest value of 80 (80 bytes? 80 packets? I don't
know). I also disabled interrupt moderation.
Result? Still 550ms.
- Then I connected my laptop directly to my cable modem, bypassing my
Mikrotik 450G router. Result? Still 550ms of bufferbloat.
- Then I put a 100 megabit switch between the cable modem an the laptop (as
both cable modem and Intel NIC are gigabit). Result? Still 550ms of upload
bufferbloat.

I'm out of ideas now. It seems I can't do anything at all to lower
bufferbloat. Or the Netalyzr test is broken?:-)

many thanks for your advice,
Jeroen
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