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From: Martin Devera <devik@cdi.cz>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] priority bands don't reduce interactive latency?
Date: Mon, 18 Feb 2002 10:00:32 +0000	[thread overview]
Message-ID: <marc-lartc-101402644703940@msgid-missing> (raw)
In-Reply-To: <marc-lartc-98373938216950@msgid-missing>

> > How do you measure the latency ? Ping ? How big packet, which ip
> > is pinged ? You use prio and other schedulers on ppp ... Goes the
> > ping packet through them ?
> 
> Sure testing is difficult. Please note that I have tried different
> configurations and not only the one I posted: sfq vs red, htb vs prio
> etc. etc. etc.

I believe you. The questions above was real they was not intended to 
show you that you are doing something bad. ;)
I'm really interested what test showed you bad delay. If you can
reply to them do it. I'll be able to think more deep on it and
possibly give you some hint.
 
> If you say htb is stable I am happy.

should be. However people often use class load balancing without
priorities. I tested priorities but this was rather quick test.
So that it is possible to have bug in priorization part :)
You should to test it by ping to the router machine to be sure
that it goes only thru htb qdisc.

regards,
devik

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  parent reply	other threads:[~2002-02-18 10:00 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2000-11-18  6:15 [LARTC] priority bands don't reduce interactive latency? Dan
2002-02-15 18:23 ` Mario Giammarco
2002-02-15 18:27 ` Martin Devera
2002-02-16 12:47 ` Mario Giammarco
2002-02-16 16:13 ` Ross Skaliotis
2002-02-16 19:26 ` Martin Devera
2002-02-18  8:34 ` Mario Giammarco
2002-02-18 10:00 ` Martin Devera [this message]
2002-02-21 15:03 ` Mario Giammarco
2002-02-22  9:38 ` Martin Devera

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