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https://issues.apache.org/jira/browse/CLOUDSTACK-9428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15432066#comment-15432066
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ASF GitHub Bot commented on CLOUDSTACK-9428:
--------------------------------------------
Github user serg38 commented on the issue:
https://github.com/apache/cloudstack/pull/1605
@jburwell The support for passing vGPU parameters is already implemented
via PR1310 which has a test case. This PR is only performance optimization by
reducing an extra reconfgtask which save about 5 sec during VM startup.
> Fix for CLOUDSTACK-9211 - Improve performance
> ---------------------------------------------
>
> Key: CLOUDSTACK-9428
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9428
> Project: CloudStack
> Issue Type: Improvement
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: VMware
> Reporter: Nicolas Vazquez
> Assignee: Nicolas Vazquez
>
> h3. Introduction
> On [CLOUDSTACK-9211|https://issues.apache.org/jira/browse/CLOUDSTACK-9211]
> passing vRAM size to support 3D GPU problem was addressed on VMware. It was
> found out that it could be improved to increase performance by reducing extra
> API calls, as we'll describe later
> h3. Improvement
> On WMware, {{VmwareResource}} manages execution of {{StartCommand}}. Before
> sending power on command to ESXi hypervisor, vm is configured by calling
> {{reconfigVMTask}} web method on vSphere's client {{VimPortType}} web service.
> It was found out that we were using this method 2 times when passing vRAM
> size, as it implied creating a new vm config spec only editing video card
> specs and making an extra call to {{reconfigVMTask}}.
> We propose reducing the extra web service call by adjusting vm's config spec.
> This way video card gets properly configured (when passing vRAM size) in the
> same configure call, increasing performance.
> h3. Use case (passing vRAM size)
> # Deploy a new VM, let its id be X
> # Stop VM
> # Execute SQL, where X is vm's id and Z is vRAM size (in kB): {code:sql}
> INSERT INTO cloud.user_vm_details (vm_id, name, value) VALUES (X,
> 'mks.enable3d', 'true');
> INSERT INTO cloud.user_vm_details (vm_id, name, value) VALUES (X,
> 'mks.use3dRenderer', 'automatic');
> INSERT INTO cloud.user_vm_details (vm_id, name, value) VALUES (X,
> 'svga.autodetect', 'false');
> INSERT INTO cloud.user_vm_details (vm_id, name, value) VALUES (X,
> 'svga.vramSize', Z);
> {code}
> # Start VM
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