Re: HTB dequeueing in pairs fixed

[Andy Furniss <andy.furniss@xxxxxxxxxxxxx>]

Stef Coene wrote:
> On Saturday 31 January 2004 02:40, Andy Furniss wrote:
>
> > I posted earlier when I noticed that htb was releasing packets in pairs,
> > even though my burst/quantums were 1 pkt.
> >
> > To fix I set HTB_HYSTERESIS 0 in net/sched/sch_htb.c .
> >
> > This gives a noticable gain in upstream worst case latency, for me with
> > 256kbit/s up I used to see +90 sometimes, now it's +45. For the many who
> >  have 128 up it should limit them to +90 rather than +180.
>
> Devik told me that disabling hysteresis will give you more accuracy, but you 
> will loose speed.  I had to disable hysteresis when I did some bursts tests.
> http://docum.org/stef.coene/qos/faq/cache/36.html
>
> Stef
Yea - I read that a while ago, it's what gave me the idea to try 0, 
after changing jiffies to CPU didn't help. I doubt with my low bandwidth 
on a P200 I will notice much difference in load, others may of course.

Andy.


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