netdev - Re: [BUG #12364] Re: HTB - very bad precision? HFSC works fine! 2.6.28

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Date:	Tue, 13 Jan 2009 05:33:14 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Denys Fedoryschenko <denys@...p.net.lb>
CC:	Jesper Dangaard Brouer <hawk@...u.dk>,
	netdev <netdev@...r.kernel.org>, bugme-daemon@...zilla.kernel.org
Subject: Re: [BUG #12364] Re: HTB - very bad precision? HFSC works fine!	2.6.28

Denys Fedoryschenko wrote:
> They are enabled
> 
> Router-Dora /config # zcat /proc/config.gz |grep HIGH_RES
> CONFIG_HIGH_RES_TIMERS=y
> Router-Dora /config # zcat /proc/config.gz |grep HZ
> CONFIG_NO_HZ=y

Its odd that HZ=1000 solved the problem despite HR timers being active.
Are you sure they're actually enabled? You should see something like
this in the ringbuffer:

[    0.241972] Switched to high resolution mode on CPU 0
[    0.242708] Switched to high resolution mode on CPU 1
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