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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-5485) Vmware - Whe 10 hourly snapshots are scheduled at the same time , we see only 5 of them being processed actively at the same time.
Date Wed, 21 May 2014 23:16:39 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-5485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14005367#comment-14005367
] 

ASF subversion and git services commented on CLOUDSTACK-5485:
-------------------------------------------------------------

Commit e3bb8b98bd9055115004da2ec67b29271a3974c5 in cloudstack's branch refs/heads/4.4-forward
from [~kelveny]
[ https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;h=e3bb8b9 ]

CLOUDSTACK-5485: Use edge-triggering in MessageDetector to handle bogus wakeup gracefully.
Level triggering plus bogus wakeup can cause a tight loop to spin


> Vmware - Whe 10 hourly snapshots are scheduled at the same time , we see only 5 of them
being processed actively at the same time. 
> -----------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-5485
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-5485
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: Management Server
>    Affects Versions: 4.3.0
>         Environment: Build from 4.3
>            Reporter: Sangeetha Hariharan
>            Assignee: Kelven Yang
>            Priority: Critical
>             Fix For: 4.4.0
>
>         Attachments: vmware.rar
>
>
> Vmware - When 10 hourly snapshots are scheduled at the same time , we see only 5 of them
being processed actively at the same time.
> Set up :
> Advanced Zone with 2 5.1 ESXI hosts.
> Steps to reproduce the problem:
> 1. Deploy 5 Vms in each of the hosts , so we start with 10 Vms.
> 2. Start concurrent snapshots for ROOT volumes of all the Vms.
> Noticed that on the Vsphere client , only 5 of these snapshots gets executed in parallel.Rest
of them get picked up when the current  snapshot jobs complete.
> Why cant we do more than 5 parallel tasks ?



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