Re: New HTB-derived qdisc for accounting?

Linux Advanced Routing and Traffic Control

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Hi,

Peter Surda schrieb:
> On Sat, 04 Jun 2005 14:45:30 +0200 Carl-Daniel Hailfinger
> 
>>Since the accounting is done with ipt_ACCOUNT right now and the
>>netfilter framework obviously can't know whether a packet was
>>dropped because the queue was full, dropped packets are counted as
>>traffic, but that is somewhat unfair.
> 
> I did some tests about a year ago and arrived to the conclusion that this
> difference can be ignored for practical purposes (~2%).

I know that it can be ignored most of the time, but certain types
of communication using UDP packets don't adjust their rates like
a TCP connection would. One pathological case was >70% dropped
packets and the netfilter counters were complete garbage.

Regards,
Carl-Daniel
-- 
http://www.hailfinger.org/
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