Hi, Takabe-san, thank you for testing dm-ioband, and I'm glad to hear that it worked on your computer. Agk, as the result shows, dm-ioband is stable and works well. I hope it gets merged into upstream, but does dm-ioband need to be tested or to be reviewed by someone else? BTW, I've posted some dm-ioband patches, but the current dm quilt tree doesn't reflect them. Is there any problem with my way of posting? Thanks, Ryo Tsuruta From: Akio Takebe <takebe_akio@xxxxxxxxxxxxxx> Subject: Test results of dm-ioband Date: Thu, 19 Mar 2009 16:51:55 +0900 > Hi, all > > Nice to meet you. I'm new to device-mapper. > I'd like to use dm-ioband because it would be useful for virtual environment(kvm, xen). > So I tested dm-ioband, and my test results are below. > I hope it's a help that dm-ioband is committed to mainline. > Any comments are welcome. > > Tested-by: Akio Takebe <takebe_akio@xxxxxxxxxxxxxx> > > Test Discription: > > Reference: > http://people.valinux.co.jp/~ryov/bwctl/ > > Setup infomation: > 1. compile and loading module > http://people.valinux.co.jp/~ryov/bwctl/ > http://people.valinux.co.jp/~ryov/dm-ioband/manual/setup.html > 2. setup dmioband > # echo "0 $(blockdev --getsize /dev/sdb7) ioband /dev/sdb7 1 0 0 none" "weight 0 :40" | dmsetup create ioband1 > # echo "0 $(blockdev --getsize /dev/sdb8) ioband /dev/sdb8 1 0 0 none" "weight 0 :10" | dmsetup create ioband2 > # mkfs.ext3 /dev/mapper/ioband1 > # mkfs.ext3 /dev/mapper/ioband2 > # mount /dev/mapper/ioband1 /mnt1 > # mount /dev/mapper/ioband2 /mnt2 > > Test Items > - load/unload module : OK > - dmsetup targets show ioband: OK > - Performance test results (fio) > Summary of results > throughput [KiB/s] % of throughput of > device weight(%) read write total ioband1 + ioband2 > ioband1 40(80%) 328 335 663 79.59% > ioband2 10(20%) 87 83 170 20.41% > > - I/O load (dd): > I used some I/O load with dd command. > I confirmed that the filesystem didn't break down. > The files written by dd were also sane. > > Best Regards, > > Akio Takebe -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
