Hi Ranjit,
Good to see these Traffic control patches for the Linux kernel. Let me take
this opportunity to convey that we have:
1) CPU & Memory controller test cases (the corresponding features are
already in mainline kernel),
2) The I/O bandwidth controller test cases (corresponding infrastructure
proposed by Andrea, but still not in any kernel tree)
in LTP (http://ltp.sourceforge.net/).
Could you kindly let me know if you have developed similar test cases for
your Traffic control features, and, if they can be contributed to LTP under
GPL.
Regards--
Subrata
On Fri, Jul 25, 2008 at 5:03 AM, Ranjit Manomohan <[EMAIL PROTECTED]>
wrote:
> [Take 4] incorporated additional comments from Patrick McHardy
>
> This patch provides a simple resource controller (cgroup_tc) based on the
> cgroups infrastructure to manage network traffic. The cgroup_tc resource
> controller can be used to schedule and shape traffic belonging to the
> task(s)
> in a particular cgroup.
>
> The implementation consists of two parts:
>
> 1) A resource controller (cgroup_tc) that is used to associate packets from
> a particular task belonging to a cgroup with a traffic control class id (
> tc_classid). This tc_classid is propagated to all sockets created by
> tasks
> in the cgroup and will be used for classifying packets at the link layer.
>
> 2) A new traffic control classifier (cls_cgroup) that can classify packets
> based on the tc_classid field in the socket to specific destination
> classes.
>
> An example of the use of this resource controller would be to limit
> the traffic from all tasks from a file_server cgroup to 100Mbps. We could
> achieve this by doing:
>
> # make a cgroup of file transfer processes and assign it a arbitrary unique
> # classid of 0x1234 - this will be used later to direct packets.
> mkdir -p /dev/cgroup
> mount -t cgroup tc -otc /dev/cgroup
> mkdir /dev/cgroup/file_transfer
> echo 0x1234 > /dev/cgroup/file_transfer/tc.classid
> echo $PID_OF_FILE_XFER_PROCESS > /dev/cgroup/file_transfer/tasks
>
> # Now create a HTB class that rate limits traffic to 100mbits and attach
> # a filter to direct all traffic from cgroup file_transfer to this new
> class.
> tc qdisc add dev eth0 root handle 1: htb
> tc class add dev eth0 parent 1: classid 1:10 htb rate 100mbit ceil 100mbit
> tc filter add dev eth0 parent 1: handle 800 protocol ip prio 1 cgroup value
> 0x1234 classid 1:10
>
> Signed-off-by: Ranjit Manomohan <[EMAIL PROTECTED]>
>
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--
Regards & Thanks--
Subrata
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