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Pano System for Cloud Administrator's Guide - Pano Logic

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Chrome Task Manager<br />

To check on detailed resource use on an<br />

individual <strong>Pano</strong> Desktop <strong>for</strong> <strong>Cloud</strong>, you can<br />

right-click in Chrome’s tab bar and select<br />

Task Manager, or type Shift-Esc. Using the<br />

Chrome Task Manager requires more ef<strong>for</strong>t<br />

than using a server-based tool but it also<br />

provides a wealth of detail on exactly how<br />

much resources are used by each tab,<br />

extension, or website rather than just<br />

providing an overall number per desktop.<br />

When opened, the Chrome Task Manager will<br />

display a list of all of the processes running<br />

on the cloud desktop, including memory<br />

used, CPU percentage, transfer speed over<br />

the network, and the frames per second (FPS) where applicable. The in<strong>for</strong>mation listed <strong>for</strong> each<br />

task will be dynamically updated in the Task Manager as task resource needs change.<br />

You can use the Task Manager inside a <strong>Pano</strong> Desktop <strong>for</strong> <strong>Cloud</strong> that is experiencing per<strong>for</strong>mance<br />

problems to pin down with tab, application, or browser extension might be consuming excessive<br />

resources. Click on any of the column labels to have the results sorted by the values in that<br />

column - <strong>for</strong> example, to look at the tasks that are using the most RAM, click on the ‘Memory’<br />

column heading to re-sort the results by amount of memory used.<br />

To get more detailed in<strong>for</strong>mation, click on the ‘Stats <strong>for</strong> nerds’ link in the lower-left corner of the<br />

Chrome Task Manager. This will open a browser tab with more detailed figures on memory usage<br />

and provide a total <strong>for</strong> the browser.<br />

Linux Shell Commands<br />

You can use Linux shell<br />

commands to look at resource<br />

use by all processes on the<br />

<strong>Pano</strong> Controller <strong>for</strong> <strong>Cloud</strong><br />

server. This won’t provide the<br />

detailed component-level view<br />

of resource use you can get<br />

from the Chrome Task Manager<br />

but it does provide an overall<br />

view of resource consumption<br />

by all server processes, not<br />

just the cloud desktops. You’ll<br />

need to run these shell commands from the <strong>Pano</strong> Controller <strong>for</strong> <strong>Cloud</strong> server’s command line, not<br />

from the <strong>Pano</strong> Controller’s web-based console. Because of this you’ll need to connect a keyboard<br />

and monitor to the server in order to use these commands.<br />

From the Ubuntu Linux shell on the <strong>Pano</strong> Controller <strong>for</strong> <strong>Cloud</strong> server, run the ‘top’ command to<br />

look at resource usage per user. This command doesn't provide a summary of total usage, but<br />

you can capture its output to a log file <strong>for</strong> analysis. The display from the top command is updated<br />

every five seconds by default, but you can change that with the d command-line option or the s<br />

interactive command. A complete list of top command options and instruction on its use the ‘man<br />

top’ commands.<br />

28 � <strong>Pano</strong> <strong>System</strong> <strong>for</strong> <strong>Cloud</strong> Administrator’s <strong>Guide</strong>

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