2009/5/5 Ryo Tsuruta <ryov@xxxxxxxxxxxxx>: > Hi Dong-Jae > > From: Dong-Jae Kang <baramsori72@xxxxxxxxx> > Subject: Re: [PATCH] range-bw: Another I/O scheduling policy of dm-ioband supporting the predicable I/O bandwidth (range bandwidth) > Date: Mon, 4 May 2009 20:23:04 +0900 > >> Hi, Ryo >> >> I released bug-fixed range-bw(V1) controller several minutes ago >> >> Although several WARNINGs of checkpatch are remained, >> but patch file was strictly checked by checkpatch.pl >> It was very time-consuming job :) >> Thank you for your advice >> >> >> >> >> > I used fio 1.22. The below is a script which I actually ran. >> >> > >> >> > #!/bin/sh >> >> > dev1=/dev/sdb4 # SATA disk >> >> > echo "0 $(sudo blockdev --getsize $dev1) ioband $dev1 share2 0 0 >> >> > cgroup range-bw 0" | sudo dmsetup create ioband1 >> >> > >> >> > arg="--time_based --runtime=10 --ioengine=libaio --iodepth=50 \ >> >> > --direct=1 --norandommap" >> >> > >> >> > dmsetup message ioband1 0 attach 2 >> >> > dmsetup message ioband1 0 attach 3 >> >> > dmsetup message ioband1 0 min-bw 2:100 >> >> > dmsetup message ioband1 0 max-bw 2:100 >> >> > dmsetup message ioband1 0 min-bw 3:200 >> >> > dmsetup message ioband1 0 max-bw 3:200 >> >> >> >> I recommend it is better to use different value in min-bw and max-bw >> >> because its concept is to support range-bw with the minimum >> >> guaranteeing and maximum limitation. >> >> exampe - min-bw : 1024 / max-bw : 3072 >> >> >> >> > echo $$ > /cgroup/grp1/tasks >> >> > fio $arg --rw=randread --name=grp1 --filename=/dev/mapper/ioband1 \ >> >> > --output=r2-1.log & >> >> > echo $$ > /cgroup/grp2/tasks >> >> > fio $arg --rw=randread --name=grp2 --filename=/dev/mapper/ioband1 \ >> >> > --output=r2-2.log & >> >> > wait >> >> after bug-fix,I evaluated range-bw according to your configuration and >> test environment >> the result is in new relesed range-bw mail, [PATCH 0/2] >> and more detailed documentation is also available and it can be >> referred in [PATCH 1/2] >> >> Ryo, >> can you check the result ? > > O.K. I'll check it and report back to you. > Hi Ryo, Thank you for your kindness I am looking forward to your report. >> >> > bio-cgroup is renamed to bklio-cgroup. :) >> > I don't clearly understand about range-bw but I think that you don't >> > need to consider to support them and it should be taken care of by >> > blkio-cgroup and the common part of dm-ioband, not the policy >> > implementation. Do you have any problems with AIO or delayed write? >> >> if you are interested in range-bw, more information is available to you >> and any questions and comments about range-bw is always welcom. :) >> >> Ryo, >> blkio-cgroup can be applied to dm-ioband ver1.10.3 without modification? >> I didn't check blkio-cgroup yet. > > Yes, it can. Please try it. > Okay, I will try to apply and test it. and then, If I have any questions and problems about that, I will contact you again. Thank you. -- Best Regards, Dong-Jae Kang _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
