I used to get an average of 18900kbit.
My hope was that these new patches would bring better accuracy.
Notice the 24 cburst. I am just trying to compensate the inaccuracy this
way. If I remove the cburst, obviously the shape rate I get goes down.
Perhaps I am missing something. I am just a novice trying to get exact
bandwidth shaping. I have tested all the clock source types with no good
results.
Regards,
Mario Antonio
----- Original Message -----
From: "Patrick McHardy" <kaber@xxxxxxxxx>
To: "Mario Antonio Garcia" <dino@xxxxxxxxxxxxx>
Cc: <lartc@xxxxxxxxxxxxxxx>
Sent: Friday, August 31, 2007 5:43 AM
Subject: Re: Clock Source Kernel settings in 2.6.22
On Wed, 29 Aug 2007, Mario Antonio Garcia wrote:
I wonder if somebody has got good results (accurate shaping) using
2.6.22?
I am testing with 2.6.22.1, and I haven't been able to get accurate
shaping.
For instance, I tried:
$TC qdisc add dev eth0 root handle 1: htb default 1
$TC class add dev eth0 parent 1: classid 1:1 htb
rate 100000kbit ceil 100000kbit burst 24k cburst 24k
$TC class add dev eth0 parent 1:1 classid 1:10 htb
rate 20000kbit ceil 20000kbit burst 24k cburst 24k
and class 1:10 shapes the traffic to 19900kbit instead of 20000kbit
(bandwidth tests made with ftp and iperf)
That seems pretty close. What values do you get with older kernels?
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