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

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Date:	Thu, 8 Jan 2009 17:27:31 -0000 (WET)
From:	mysql.jorge@...imal.pt
To:	"Jarek Poplawski" <jarkao2@...il.com>
Cc:	"Denys Fedoryschenko" <denys@...p.net.lb>, netdev@...r.kernel.org,
	bugme-daemon@...zilla.kernel.org
Subject: Re: [BUG #12364] Re: HTB - very bad precision? HFSC works fine!    
       2.6.28

I asume there's some issue with the NIC Driver os the kernel modules with
the 1000Mbit NIC's? am i correct?


> An active connection when running this commands:
> (now it seams to work, the 200Kbit i defined, are gaving me 22.5/23Kbyte
> /sec)
>
> Did you catch it?
>
>
> lira:~# ethtool -k eth0
> Offload parameters for eth0:
> Cannot get device flags: Operation not supported
> rx-checksumming: on
> tx-checksumming: on
> scatter-gather: off
> tcp segmentation offload: off
> udp fragmentation offload: off
> generic segmentation offload: off
> large receive offload: off
> lira:~# tc -s qdisc show dev eth0
> qdisc cbq 1: root rate 12500000bps (bounded,isolated) prio no-transmit
>  Sent 5336353 bytes 5737 pkts (dropped 16, overlimits 1382)
>  backlog 8p
>   borrowed 0 overactions 0 avgidle 78 undertime 0
>
>  qdisc tbf 1280: parent 1:1280 rate 25000bps burst 10Kb lat 209.7ms
>  Sent 441812 bytes 310 pkts (dropped 16, overlimits 2215)
>  backlog 8p
>
> lira:~# tc -s class show dev eth0
> class cbq 1: root rate 12500000bps (bounded,isolated) prio no-transmit
>  Sent 5128779 bytes 5827 pkts (dropped 0, overlimits 0)
>   borrowed 0 overactions 0 avgidle 78 undertime 0
> class cbq 1:1280 parent 1: leaf 1280: rate 25000bps (bounded,isolated)
> prio 5
>  Sent 811784 bytes 568 pkts (dropped 22, overlimits 0)
>  backlog 9p
>   borrowed 0 overactions 0 avgidle 4507 undertime 0
> class tbf 1280:1 parent 1280: [UNKNOWN]
>  Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
>
>
>
>
>
>> Could you try to check this with scatter-gather and tcp segmentation
>> offload off too? If there is no difference please send the stats
>> again both for working and non-working case.
>>
>> Thanks,
>> Jarek P.
>>
>
>
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