[bcroq]

Hi,

I have asked about this on misc@openbsd.org but got no reply so I try here... maybe there is a better mailing-list to talk about altq related problems?

I am trying to use altq to improve the ACK management on my ADSL
connexion but I don't really understand what happens. Here are the
rules:

...
altq on $ext_if priq bandwidth 250Kb queue { ext_std, ext_ack }
queue ext_std qlimit 200 priq(default)
queue ext_ack priority 15
...
pass out quick on $ext_if inet proto tcp from $ext_ip to any flags S/SA keep state queue (ext_std, ext_ack)
pass out quick on $ext_if inet from $ext_ip to any keep state queue ext_std
...


Once these rules loaded, I start a download (almost 600Kbytes/s) then I
start an upload... the download immediatly falls down (to 400Kbytes/s or
less).

Here is what "pfctl -vvsq" outputs:

queue ext_std qlimit 200 priq( default )
[ pkts: 5401 bytes: 3289014 dropped pkts: 0 bytes: 0 ]
[ qlength: 0/200 ]
[ measured: 7.9 packets/s, 83.07Kb/s ]
queue ext_ack priority 15
[ pkts: 32020 bytes: 2113528 dropped pkts: 0 bytes: 0 ]
[ qlength: 0/ 50 ]
[ measured: 135.1 packets/s, 71.32Kb/s ]

71.32Kb/s seems to be a huge ACK bandwidth, isn't it?

Where could be my mistake? (I use OpenBSD 3.6, and the problem is the
same with 3.5, but it works with 3.4)

[michael2l]

Did you ever find a resolution to this problem dude?