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    <description>Channel 9 keeps you up to date with the latest news and behind the scenes info from Microsoft that developers love to keep up with. From LINQ to SilverLight – Watch videos and hear about all the cool technologies coming and the people behind them.</description>
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    <pubDate>Wed, 19 Jun 2013 14:34:20 GMT</pubDate>
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      <title>Inside Windows 8: Prashant Ratanchandani - Telemetry and Performance</title>
      <description><![CDATA[<p>A great deal of data is collected during the alpha and beta phases (aka the Developer Preview and the Customer Preview) of Windows. As with Windows 7, Windows 8 performance telemetry is invaluable for identifying performance bottlenecks and bugs in Windows running in the real world.&nbsp;<br><br>There are&nbsp;sophisticated performance and reliability measurement systems inside Windows. <strong>PerfTrack </strong>is one of these and&nbsp;is instrumental for providing Windows team engineers with highly detailed performance data (how long an app took to launch, how long an app took to shutdown, how long it took Windows to standby, to resume, etc...). Here, we meet <strong>Prashant Ratanchandani</strong>, one of the developers who works tirelessly to build/fine tune telemetric&nbsp;measurement algorithms for Windows client (you can imagine there is an equally robust performance telemetry system in Windows 8 Server) and to analyze performance telemetry.</p> <img src="http://m.webtrends.com/dcs1wotjh10000w0irc493s0e_6x1g/njs.gif?dcssip=channel9.msdn.com&dcsuri=http://channel9.msdn.com/Tags/perftrack/RSS&WT.dl=0&WT.entryid=Entry:RSSView:a7f1d1fc743b495eaf4ea0d00185495c">]]></description>
      <comments>http://channel9.msdn.com/posts/Inside-Windows-8-Prashant-Ratanchandani-Telemetry-and-Performance</comments>
      <itunes:summary>A great deal of data is collected during the alpha and beta phases (aka the Developer Preview and the Customer Preview) of Windows. As with Windows 7, Windows 8 performance telemetry is invaluable for identifying performance bottlenecks and bugs in Windows running in the real world.&amp;nbsp;There are&amp;nbsp;sophisticated performance and reliability measurement systems inside Windows. PerfTrack is one of these and&amp;nbsp;is instrumental for providing Windows team engineers with highly detailed performance data (how long an app took to launch, how long an app took to shutdown, how long it took Windows to standby, to resume, etc...). Here, we meet Prashant Ratanchandani, one of the developers who works tirelessly to build/fine tune telemetric&amp;nbsp;measurement algorithms for Windows client (you can imagine there is an equally robust performance telemetry system in Windows 8 Server) and to analyze performance telemetry. </itunes:summary>
      <itunes:duration>1478</itunes:duration>
      <link>http://channel9.msdn.com/posts/Inside-Windows-8-Prashant-Ratanchandani-Telemetry-and-Performance</link>
      <pubDate>Mon, 21 Jan 2013 20:37:16 GMT</pubDate>
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      <dc:creator>Charles</dc:creator>
      <itunes:author>Charles</itunes:author>
      <slash:comments>1</slash:comments>
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      <category>Kernel</category>
      <category>Performance</category>
      <category>PerfTrack</category>
      <category>Windows 8</category>
      <category>WindowsContent</category>
      <category>Inside Windows 8</category>
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      <title>David Fields and Bill Karagounis: Inside Windows 7 - Reliability, Performance and PerfTrack</title>
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<p>PerfTrack is the feedback and monitoring&nbsp;system inside of Windows 7 that performs measurements on, well, all things related to the overall&nbsp;performance of the OS, especially as it relates to system&nbsp;responsiveness to user actions. So, when you click on something
 (an icon, a folder name, etc...), how long does it take for the user to receive an expected reaction from the system? What are the bottlenecks that lead to a poor experience (user-observable latency)&nbsp;when using some feature in Windows? Is the root problem
 in&nbsp;the design of the feature itself&nbsp;or with&nbsp;the underlying&nbsp;OS? Enter&nbsp;PerfTrack.<br /><br />Here, Development Manager David Fields and Group Program Manager Bill Karagounis share their wisdom and experience in the world of OS performance analysis. David and Bill explain how PerfTrack works and we digress into an interesting conversation about power
 management.<br /><br />PerfTrack is an example of a&nbsp;technology that&nbsp;provides <em>incredibly</em> important real-world information to&nbsp;Windows engineers that can be used to solve performance&nbsp;problems in&nbsp;Windows.
<br /><br />Enjoy!</p>
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      <comments>http://channel9.msdn.com/Blogs/Charles/Inside-Windows-7-Reliability-Performance-and-PerfTrack</comments>
      <itunes:summary>
PerfTrack is the feedback and monitoring&amp;nbsp;system inside of Windows 7 that performs measurements on, well, all things related to the overall&amp;nbsp;performance of the OS, especially as it relates to system&amp;nbsp;responsiveness to user actions. So, when you click on something
 (an icon, a folder name, etc...), how long does it take for the user to receive an expected reaction from the system? What are the bottlenecks that lead to a poor experience (user-observable latency)&amp;nbsp;when using some feature in Windows? Is the root problem
 in&amp;nbsp;the design of the feature itself&amp;nbsp;or with&amp;nbsp;the underlying&amp;nbsp;OS? Enter&amp;nbsp;PerfTrack.Here, Development Manager David Fields and Group Program Manager Bill Karagounis share their wisdom and experience in the world of OS performance analysis. David and Bill explain how PerfTrack works and we digress into an interesting conversation about power
 management.PerfTrack is an example of a&amp;nbsp;technology that&amp;nbsp;provides incredibly important real-world information to&amp;nbsp;Windows engineers that can be used to solve performance&amp;nbsp;problems in&amp;nbsp;Windows.
Enjoy! 
</itunes:summary>
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      <link>http://channel9.msdn.com/Blogs/Charles/Inside-Windows-7-Reliability-Performance-and-PerfTrack</link>
      <pubDate>Mon, 10 Aug 2009 18:31:00 GMT</pubDate>
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      <dc:creator>Charles</dc:creator>
      <itunes:author>Charles</itunes:author>
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