Hi Haotian, > The results are almost the same. I can not see any change of Direct I/O > performance for this bio-cgroup kernel feature with dm-ioband support! > > Does the methord to caculate throughout should be the Rate of xdd.linux > output? > Dose my testing approach should be correct? If not, please help me point > out.
Could you try to run the xdd programs simultaneously? dm-ioband controls bandwidth while I/O requests are issued simultaneously from processes which belong to different cgroup. If I/O requests are only issued from processes which belong to one cgroup, the processes can use the whole bandwidth. The following URL is an example of how bandwidth is shared to I/O load change. http://people.valinux.co.jp/~ryov/dm-ioband/benchmark/partition1.html Thanks, Ryo Tsuruta _______________________________________________ Containers mailing list [EMAIL PROTECTED] https://lists.linux-foundation.org/mailman/listinfo/containers _______________________________________________ Devel mailing list Devel@openvz.org https://openvz.org/mailman/listinfo/devel
