From: Bob Chen <a175818323@gmail.com>
To: Markus Armbruster <armbru@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: [Qemu-devel] cgroup blkio weight has no effect on qemu
Date: Wed, 20 Jan 2016 18:15:37 +0800 [thread overview]
Message-ID: <CAMxP3BSGgbjRM+9=eer1iEVg0e_W_4J3-_r-J1ASnGGL4XAFCA@mail.gmail.com> (raw)
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Sorry for disturbing by reply, don't know why I'm not able to send a new
mail.
------------------------
Hi folks,
Could you enlighten me how to achieve proportional IO sharing by using
cgroup, instead of qemu's io-throttling?
My qemu config is like: -drive
file=$DISKFILe,if=none,format=qcow2,cache=none,aio=native -device
virtio-blk-pci...
Test command inside vm is like: dd if=/dev/vdc of=/dev/null iflag=direct
Cgroup blkio weight of the qemu process is properly configured as well.
But no matter how change the proportion, such as vm1=400 and vm2=100, I can
only get the equal IO speed.
Wondering cgroup blkio.weight or blkio.weight_device has no effect on qemu?
PS. cache=writethrough aio=threads is also tested, the same results.
- Bob
2016-01-20 18:04 GMT+08:00 Markus Armbruster <armbru@redhat.com>:
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next reply other threads:[~2016-01-20 10:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-20 10:15 Bob Chen [this message]
-- strict thread matches above, loose matches on Subject: below --
2016-01-20 10:41 [Qemu-devel] cgroup blkio weight has no effect on qemu 陈博
2016-01-20 14:52 ` Daniel P. Berrange
2016-01-20 9:55 Bob Chen
2016-01-20 9:51 Bob Chen
2016-01-20 9:43 陈博
2016-01-20 9:37 Bob Chen
2016-01-20 9:29 Bob Chen
2016-01-19 9:59 陈博
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