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Bug#534444: Acknowledgement (linux-image-2.6.26-2-486: CBQ broken)

I thought we had it closed :)

I have not tried with anything past 2.6.26.

2.6.26 as discussed before on this bug has two problems:

1. Counterintuitive use of the word "borrow" in the stats.

2. Bad estimator precision compared to  2.6.18 and older kernels. 

If you know about both you can workaround. I do not believe that the use
of "Borrow" will be changed any time soon. It will be interesting to see
if the timers have improved, but I have no test rig to test it right now.


Moritz Muehlenhoff wrote:
> tags 534444 moreinfo
> thanks
> On Wed, Jun 24, 2009 at 11:08:36PM +0100, Ben Hutchings wrote:
>> On Wed, 2009-06-24 at 16:42 +0100, Anton Ivanov wrote:
>>> Additional information.
>>> It does not do it on all classes. I can observe it on a particular class
>>> parented to the root CBQ qdisc with multiple burstable children. 
>>> "isolated" put on another class parented to the root qdisc is similarly
>>> ignored. 
>>> I will try to dig through the source to see exactly where the bug is,
>>> but it is definitely a bug (the results of tc are confirmed by delay
>>> measurements and bandwidth measurements in the relevant classes).
>> Please also test whether the configuration you're trying is still broken
>> in kernel version 2.6.30 (from unstable).  If so, please report this bug
>> upstream on bugzilla.kernel.org.
> Anton,
> does still occur with current kernels? Did you report it in the kernel.org
> bugzilla?
> Cheers,
>         Moritz

   Understanding is a three-edged sword:
            your side, their side, and the truth. --Kosh Naranek

A. R. Ivanov
E-mail:  aivanov@sigsegv.cx
WWW:     http://www.sigsegv.cx/
pub 1024D/DDE5E715 2002-03-03 Anton R. Ivanov <ai1-n@sigsegv.cx>
    Fingerprint: C824 CBD7 EE4B D7F8 5331  89D5 FCDA 572E DDE5 E715


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