netdev - Re: Bad shaping at low rates, after commit 56b765b79 (htb: improved accuracy at high rates)

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Message-ID: <1370361727.24311.215.camel@edumazet-glaptop>
Date:	Tue, 04 Jun 2013 09:02:07 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jesper Dangaard Brouer <brouer@...hat.com>
Cc:	Stephen Hemminger <stephen@...workplumber.org>,
	Jiri Benc <jbenc@...hat.com>, David Miller <davem@...hat.com>,
	j.vimal@...il.com, Michal Soltys <soltys@....info>,
	Mike Frysinger <vapier@...too.org>,
	Jussi Kivilinna <jussi.kivilinna@...et.fi>,
	Patrick McHardy <kaber@...sh.net>,
	Jiri Pirko <jpirko@...hat.com>,
	Toke Høiland-Jørgensen <toke@...e.dk>,
	Dave Taht <dave.taht@...il.com>, netdev@...r.kernel.org,
	bloat@...ts.bufferbloat.net, Dan Siemon <dan@...erfire.com>,
	Jim Gettys <jg@...edesktop.org>,
	Steven Barth <cyrus@...nwrt.org>, Felix Fietkau <nbd@....name>
Subject: Re: Bad shaping at low rates, after commit 56b765b79 (htb: improved
 accuracy at high rates)

On Tue, 2013-06-04 at 08:55 -0700, Eric Dumazet wrote:
> On Tue, 2013-06-04 at 08:18 -0700, Eric Dumazet wrote:
> 
> > I have a good idea of what's going on for htb at low rates, I am testing
> > a fix, thanks for the report !
> > 
> 
> Yes, we need to convert whole thing to use ns units, instead
> of a mix of 64ns and 1ns units.
> 
> Please test the following patch :

Oh well, it works only on 64bit arches.

I'll send a more complete patch, but thats the idea


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