On Jan 14, 2008 6:30 PM, Chris Kuethe <[EMAIL PROTECTED]> wrote:
> My theory is that you're using a ... uh... well, not very good
> connection that bogs down easily.

My connection normally works fine; even when I max out my 7Mb/512Kb
line.  Running BitTorrent (even with a fraction of the bandwidth)
makes my latency go through the roof.

> Some time ago, I tossed together a
> little undeadly article on how to use altq to keep bittorrent from
> dragging your network down -
> http://www.undeadly.org/cgi?action=article&sid=20061109202501

See the thread I referenced in my previous email.  The issue I am
experiencing seems to have nothing to do with bandwidth usage.

> I think you can solve this by tuning your service classes a little
> better.

If you have a specific suggestion, I will try it and post the result
here, but as I discussed in the previous thread, altq shows that there
is no backlog of packets, and even with BitTorrent rate limited to a
small fraction of the bandwidth (via CBQ or HFSC) it is still able to
cause the latency issue.  By contrast if I limit the number of
connections, BitTorrent can consume almost all of the bandwidth and
the issue will not appear.

Perhaps this problem is specific to my configuration (or specific to
DOCSIS cable modems).  But if it makes Brian (or someone else's
problem) go away, then it is likely that this problem is not unique.

--MHC

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