From: Emmanuel Lacour <elacour@easter-eggs.com>
To: kvm@vger.kernel.org
Subject: Using tools such as ionice inside guests
Date: Wed, 18 May 2016 17:49:03 +0200 [thread overview]
Message-ID: <573C8EEF.9060000@easter-eggs.com> (raw)
Dear kvm developpers/users,
I just saw that a change has been made in the kernel so the only one
scheduler available in guests for virtio-blk is now "none".
Seems introduced by [1].
I tried to used ionice on a 3.16 guest with virtio-blk and in fact it no
longer works because cfq is no longer available.
Is there a way to use, inside a guest, a tool like ionice to set
different IO priority in guests processes? It's very useful for loering
down the performance impact of backups jobs for example.
[1] -
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a98755c559e0e944a44174883b74a97019e3a367
next reply other threads:[~2016-05-18 15:55 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-18 15:49 Emmanuel Lacour [this message]
2016-05-18 16:13 ` Using tools such as ionice inside guests Paolo Bonzini
2016-05-18 16:26 ` Emmanuel Lacour
2016-05-18 17:12 ` Paolo Bonzini
2016-05-19 20:12 ` Christian Borntraeger
2016-05-20 10:35 ` Paolo Bonzini
2016-05-20 12:54 ` Emmanuel Lacour
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