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From Marcus Sorensen <shadow...@gmail.com>
Subject Re: [jira] [Commented] (CLOUDSTACK-1301) VM I/O Throttling
Date Fri, 15 Feb 2013 15:53:49 GMT
The Linux cgroup io controllers are generally horrible. Probably better
than nothing, but that's why I was thinking that if the primary storage
provides QoS it could do it. Or perhaps a user wants to install an
alternative cgroup controller like BetterLinux modules. Then use the
libvirt one as a fallback. But I wouldn't want to see it just applied as
extra XML that only libvirt supports.
On Feb 15, 2013 8:45 AM, "Wido den Hollander (JIRA)" <jira@apache.org>
wrote:

>
>     [
> https://issues.apache.org/jira/browse/CLOUDSTACK-1301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13579256#comment-13579256]
>
> Wido den Hollander commented on CLOUDSTACK-1301:
> ------------------------------------------------
>
> I already made this spec:
> https://cwiki.apache.org/confluence/display/CLOUDSTACK/Disk+IO+statistics+for+instances
>
> And the Jira ticket: https://issues.apache.org/jira/browse/CLOUDSTACK-449
>
> We should have polling work first before we start doing the throttling,
> right?
>
> I know that KVM (with libvirt) supports it all.
>
> > VM I/O Throttling
> > -----------------
> >
> >                 Key: CLOUDSTACK-1301
> >                 URL:
> https://issues.apache.org/jira/browse/CLOUDSTACK-1301
> >             Project: CloudStack
> >          Issue Type: New Feature
> >      Security Level: Public(Anyone can view this level - this is the
> default.)
> >    Affects Versions: 4.0.0
> >            Reporter: Wei Zhou
> >
> > VM I/O Throttling, to set the maximum disk I/O rate of VMs.
> > Virtual machines are running on the same storage device (local storage
> or share strage). Because of the rate limitation of device (such as iops),
> if one VM has large disk operation, it may affect the disk performance of
> other VMs running on the same storage device.
> >  It is neccesary to set the maximum rate and limit the disk I/O of VMs.
> > More details:
> > https://cwiki.apache.org/confluence/display/CLOUDSTACK/VM+IO+Throttling
>
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