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From "Wei Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-1301) VM Disk I/O Throttling
Date Thu, 25 Apr 2013 14:26:17 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-1301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13641854#comment-13641854
] 

Wei Zhou commented on CLOUDSTACK-1301:
--------------------------------------

David,

It works on libvirt 0.9.8 (or later) and QEMU 1.1.0(or later)
For Ubuntu 12.04 (with qemu 1.0.0) or CentOS 6.3/6.4 (with qemu 0.12.1.2) , qemu need to be
upgraded to at least 1.1.0 (1.2.0 is better).
                
> VM Disk 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, 4.1.0
>            Reporter: Wei Zhou
>            Assignee: Wei Zhou
>             Fix For: 4.2.0
>
>
> VM Disk 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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