netdev - Re: HFSC classes going out of bounds, regression in recent kernels?

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Message-Id: <201004061845.42766.nuclearcat@nuclearcat.com>
Date:	Tue, 6 Apr 2010 18:45:42 +0300
From:	Denys Fedorysychenko <nuclearcat@...learcat.com>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	netdev@...r.kernel.org, Jeff Garzik <jeff@...zik.org>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: HFSC classes going out of bounds, regression in recent kernels?

On Tuesday 06 April 2010 18:37:39 Patrick McHardy wrote:
> Denys Fedorysychenko wrote:
> > I notice on one of my QoS machines that HFSC start going out of bandwidth
> > limits. The most terrible thing - it happens suddenly, and if i just
> > relaunch QoS script - everything will work fine.
> 
> That sounds like there's an overflow somewhere.
> 
> > I'm not sure it is not my mistake, but most probably it is a bug.
> > I can't tell for sure when it is happened, last kernel was on this
> > machine 2.6.28 i guess, or maybe even older.
> 
> Looking through the recent patches in this area, my prime suspect
> is the attached patch. Does reverting it make any difference?
> 
I will try to upgrade soon, it is critical router, so probably i will do this 
tonight. 
I guess with reverting this patch also it will hurt shaper resolution on high 
speeds... not a case for me, but for other people.
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