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Date: Mon, 18 Aug 2008 18:05:17 +0530 From: Subrata Modak <subrata@...ux.vnet.ibm.com> To: Ranjit Manomohan <ranjitm@...gle.com> Cc: ltp-list <ltp-list@...ts.sourceforge.net>, Sudhir <sudhirkumarmalik@...ibm.com>, akpm@...ux-foundation.org, netdev@...r.kernel.org, menage@...gle.com, kaber@...sh.net, Balbir Singh <balbir@...ux.vnet.ibm.com> Subject: Re: [LTP] [PATCH 0/0] Traffic control cgroups subsystem Hi Ranjit, > > > > > > On Fri, 2008-07-25 at 05:18 +0530, Subrata Modak wrote: > > >> 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. > > > > > > Ranjit, > > > > > > Would you like to tell us something on the test cases for this ? > > > > Subrata, > > We have some internal test cases but not under LTP. Let me take a > > look at the existing LTP infrastructure and see if these can be ported > > over. > > Thanks Ranjit. Let me say that any test cases that returns 0 on PASS, or > some non-zero on failure can be easily integrated under LTP. If you > would like to give me those test cases, i can try integrating them and > send you across the results. Did you find time to humbly look into this ? Regards-- Subrata > > Regards-- > Subrata > > > > > -Thanks, > > Ranjit > > > > > > > > > > Regards-- > > > Subrata > > > > > >> > > >> Regards-- > > >> Subrata > > >> > > >> On Fri, Jul 25, 2008 at 5:03 AM, Ranjit Manomohan <ranjitm@...gle.com> > > >> 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 <ranjitm@...gle.com> > > >> > > >> --- > > >> -- > > >> To unsubscribe from this list: send the line "unsubscribe > > >> linux-kernel" in > > >> the body of a message to majordomo@...r.kernel.org > > >> More majordomo info at > > >> http://vger.kernel.org/majordomo-info.html > > >> Please read the FAQ at http://www.tux.org/lkml/ > > >> > > >> > > >> > > >> -- > > >> Regards & Thanks-- > > >> Subrata > > >> ------------------------------------------------------------------------- > > >> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > > >> Build the coolest Linux based applications with Moblin SDK & win great prizes > > >> Grand prize is a trip for two to an Open Source event anywhere in the world > > >> http://moblin-contest.org/redirect.php?banner_id=100&url=/ > > >> _______________________________________________ Ltp-list mailing list Ltp-list@...ts.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ltp-list > > > > > > > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Ltp-list mailing list > Ltp-list@...ts.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ltp-list -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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