Re: [LARTC] HTB Rate and Prio (continued)

[Andy Furniss <andy.furniss@dsl.pipex.com>]

Gael Mauleon wrote:
> Ok I tested the shaping on the SDSL line with netperf and
> an host outside.
> 
> Same script than before, I classify the packets into qdisc based on the
> source address in netfilter and here are the result, that's with sfq.
> I'm positive on the right traffic going to the right class.
 >
 >
 > TCP STREAM TEST to 81.57.243.113 (NORMAL)
 > Recv   Send    Send
 > Socket Socket  Message  Elapsed
 > Size   Size    Size     Time     Throughput
 > bytes  bytes   bytes    secs.    10^3bits/sec
 >
 >  87380   8192   8192    60.00     282.90
 >
 >
 >
 > TCP STREAM TEST to 81.57.243.113 (LOWPRIO)
 > Recv   Send    Send
 > Socket Socket  Message  Elapsed
 > Size   Size    Size     Time     Throughput
 > bytes  bytes   bytes    secs.    10^3bits/sec
 >
 >  87380   8192   8192    61.00     390.00

Hmm I can't really think why this is happening, is it the same box that 
you did the lan test from?

I think what I would do as the next test is turn off window scaling -

echo 0 > /proc/sys/net/ipv4/tcp_window_scaling

add 70k bfifos to the classes - you shouldn't drop any packets then.
Repeat the test and tcpdump it. If you see packet loss then this could 
be the explanation.

Andy.
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