Hi Dong-Jae, Thanks for testing. Could you do the same test without dm-ioband? I would like to know the throughput of your disk drive and a difference with and withour dm-ioband. Thanks, Ryo Tsuruta Dong-Jae Kang <baramsori72@xxxxxxxxx> wrote: > Hi Ryo > I attached new file that includes I/O total bandwidth of evaluation system. > We tested total bandwidth of weight policy by I/O in Dom0 and DomU system > and it is measured through iostat tool and dm-ioband debug patch which I > gave you several months ago. > Of course, the result in prior report was measured by dm-ioband debug patch. > > As a result, the big difference in prior report derives from the location > where we measured I/O bandwidth > iostat counts it in application level and dm-ioband debug patch does it in > dm-ioband controller. > I think the difference is related with buffer cache. > > Thank you. > Have a nice weekend > > 2009/8/27 Dong-Jae Kang <baramsori72@xxxxxxxxx> > > > Hi Ryo > > > > 2009/8/27 Ryo Tsuruta <ryov@xxxxxxxxxxxxx> > > > > Hi Dong-Jae, > >> > >> # I've added dm-devel to Cc:. > >> > >> Dong-Jae Kang <baramsori72@xxxxxxxxx> wrote: > >> > Hi Ryo > >> > > >> > I attached new test result file(ioband-partition-based-evaluation.xls)in > >> > this mail. > >> > >> Thanks for your great job. > >> > >> > In this time, it is not virtualization environment. > >> > I evaluated partition-based use cases before I do it in vitualization > >> > environment. > >> > because I think the two cases are smilar each other. > >> > > >> > The detailed information about the evaluation can be referred in > >> attached > >> > file. > >> > > >> > If you have any questions or comments after examine it, > >> > please give me your opinion. > >> > >> I would like to know the throughput without dm-ioband in your > >> environment. Because the total throughput of range-bw policy is > >> 8000KB/s, which means the device has a capability to perform over > >> 8000KB/s, but the total throughput of weight policy is lower than > >> the range-bw policy. In my environment, there is no significant > >> difference in average throughput between with and without dm-ioband. > >> I ran fio in the way described in your result file. Here are the > >> results of my environment. The throughputs were calculated from > >> "iostat -k 1" outputs. > >> > >> buffered write test > >> Avg. throughput [KB/s] > >> w/o ioband w/ioband > >> sdb2 14485 5788 > >> sdb3 12494 22295 > >> total 26979 28030 > >> > > > > OK, good comments. > > I omitted the total bandwidth of the evaluation system. > > > > I will reply to you about it tomorrow after I check and re-test it again. > > > >> > >> Thanks, > >> Ryo Tsuruta > >> > > > > Thank you for comments. > > > > > > -- > > Best Regards, > > Dong-Jae Kang > > > > > > -- > Best Regards, > Dong-Jae Kang _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
