[ck]Re: cgroup2 io weight 没有效果

Hi Joseph, Thanks for your reply! But I have 2 questions, : 1. why the blkio.bfq.weight has no effect after "echo bfq > /sys/block/vdb/queue/scheduler" 2.iocost didn't work either, two fio both got 5M,but 3M and 6M is what I want.Point out my mistakes please! Thanks very much! And my shell like below: mount /dev/vdb1 /wcg/data2/ cd /sys/fs/cgroup/blkio echo bfq > /sys/block/vdb/queue/scheduler echo 0 > /sys/block/vdb/queue/iosched/low_latency echo "253:16 10485760" > blkio.throttle.write_bps_device echo "253:16 enable=1" > blkio.cost.qos echo "253:16 ctrl=auto" > blkio.cost.model echo 0 > /sys/block/vdb/queue/rotational mkdir fio1 fio2 echo "253:16 100" > fio1/blkio.cost.weight echo "253:16 200" > fio2/blkio.cost.weight echo $$ > /sys/fs/cgroup/blkio/fio1/cgroup.procs fio -rw=write -ioengine=libaio -bs=4k -size=1G -numjobs=1 -name=/wcg/data2/fio_test1.log #do follows at another console echo $$ > /sys/fs/cgroup/blkio/fio2/cgroup.procs fio -rw=write -ioengine=libaio -bs=4k -size=1G -numjobs=1 -name=/wcg/data2/fio_test2.log 在 2022-09-28 16:41:40，"Joseph Qi" <joseph.qi(a)linux.alibaba.com> 写道： > 'io.weight' is for cfq io scheduler, while 'io.bfq.weight' is for bfq io > scheduler, as its name indicates. > So you may need configure corresponding io scheduler as well. > > BTW, if you want io weight control, I recommend another approach named io > cost. The following documentation may help to understand the details: > https://help.aliyun.com/document_detail/155863.html > > Thanks, > Joseph > > On 9/28/22 1:50 PM, 王传国 wrote: >> 各位同仁, >> >> 我看到cgroup2中有io.weight 和 io.bfq.weight，区别是什么? >> >> 我的理解是为了控制兄弟group在父group下的IO权重，我在如下版本测试了下，好像结果不太对，谁能指点一下，拜谢！ >> >> # uname -a >> >> Linux localhost.localdomain 4.19.91-26.an8.x86_64 #1 SMP Tue May 24 13:10:09 CST 2022 x86_64 x86_64 x86_64 GNU/Linux >> >> >> >> 我的测试脚本： >> >> #change to cgroup2 by adding cgroup_no_v1=all into grub param >> >> mkdir -p /aaa/cg2 >> >> mkdir -p /aaa/data2 >> >> mount -t cgroup2 nodev /aaa/cg2 >> >> mount /dev/sdb1 /aaag/data2/ >> >> echo bfq > /sys/block/vdb/queue/scheduler #做或不做 >> >> >> >> mkdir /aaa/cg2/test >> >> echo "+io +memory" > /aaa/cg2/cgroup.subtree_control >> >> echo "+io +memory" > /aaa/cg2/test/cgroup.subtree_control >> >> cat /aaa/cg2/test/cgroup.controllers >> >> echo "8:16 wbps=10485760" > /aaa/cg2/test/io.max >> >> echo $$ > /aaa/cg2/test/cgroup.procs >> >> >> >> mkdir -p /aaa/cg2/test/dd1 >> >> mkdir -p /aaa/cg2/test/dd2 >> >> echo 200 > /aaa/cg2/test/dd1/io.weight >> >> #echo 200 > /aaa/cg2/test/dd1/io.bfq.weight #两个选项都试了 >> >> >> >> #在另外2个终端执行如下的2个测试: >> >> echo $$ > /aaa/cg2/test/dd1/cgroup.procs >> >> dd if=/dev/zero of=/aaa/data2/ddfile1 bs=128M count=1 >> >> >> >> echo $$ > /aaa/cg2/test/dd2/cgroup.procs >> >> dd if=/dev/zero of=/aaa/data2/ddfile2 bs=128M count=1 >> >> >> >> 我得到了两个 500K+, 而不是期望的300K+ and 600K！ >> >> >> >> _______________________________________________ >> Cloud Kernel mailing list -- cloud-kernel(a)lists.openanolis.cn >> To unsubscribe send an email to cloud-kernel-leave(a)lists.openanolis.cn > _______________________________________________ > Cloud Kernel mailing list -- cloud-kernel(a)lists.openanolis.cn > To unsubscribe send an email to cloud-kernel-leave(a)lists.openanolis.cn