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)" <j...@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 > > -- > This message is automatically generated by JIRA. > If you think it was sent incorrectly, please contact your JIRA > administrators > For more information on JIRA, see: http://www.atlassian.com/software/jira >
