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	<title>Blog O' Matty &#187; Linux performance</title>
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		<title>Getting an accurate view of process memory usage on Linux hosts</title>
		<link>http://prefetch.net/blog/index.php/2010/07/02/getting-an-accurate-view-of-process-memory-usage-on-linux-hosts/</link>
		<comments>http://prefetch.net/blog/index.php/2010/07/02/getting-an-accurate-view-of-process-memory-usage-on-linux-hosts/#comments</comments>
		<pubDate>Fri, 02 Jul 2010 12:06:20 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Linux performance]]></category>
		<category><![CDATA[Linux Utilities]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=3634</guid>
		<description><![CDATA[Having debugged a number of memory-related issues on Linux, one thing I&#8217;ve always wanted was a tool to display proportional memory usage. Specifically, I wanted to be able to see how much memory was unique to a process, and have an equal portion of shared memory (libraries, SMS, etc.) added to this value. My wish [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<title>Why isn&#8217;t Oracle using huge pages on my Redhat Linux server?</title>
		<link>http://prefetch.net/blog/index.php/2010/02/11/why-isnt-oracle-using-huge-pages-on-my-redhat-linux-server/</link>
		<comments>http://prefetch.net/blog/index.php/2010/02/11/why-isnt-oracle-using-huge-pages-on-my-redhat-linux-server/#comments</comments>
		<pubDate>Thu, 11 Feb 2010 16:55:39 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Linux Debugging]]></category>
		<category><![CDATA[Linux performance]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=3395</guid>
		<description><![CDATA[I am currently working on upgrading a number of Oracle RAC nodes from RHEL4 to RHEL5. After I upgraded the first node in the cluster, my DBA contacted me because the RHEL5 node was extremely sluggish. When I looked at top, I saw that a number of kswapd processes were consuming CPU: $ top top [...]]]></description>
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		<slash:comments>3</slash:comments>
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		<title>Tuning network and vm settings on CentOS Linux servers with ktune</title>
		<link>http://prefetch.net/blog/index.php/2009/04/26/performance-tuning-linux-servers-with-ktune/</link>
		<comments>http://prefetch.net/blog/index.php/2009/04/26/performance-tuning-linux-servers-with-ktune/#comments</comments>
		<pubDate>Sun, 26 Apr 2009 16:06:35 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Linux performance]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=1649</guid>
		<description><![CDATA[While poking around the CentOS package repository, I came across the ktune package. Ktune comes with a set of kernel tunables that are useful for network and disk intensive workloads, and provides the ktune service to apply these settings during system startup. Ktune includes settings for TCP/IP buffers, setting the deadline scheduler as the default [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
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		<title>Monitoring Linux server performance with procallator</title>
		<link>http://prefetch.net/blog/index.php/2007/06/15/monitoring-linux-server-performance-with-procallator/</link>
		<comments>http://prefetch.net/blog/index.php/2007/06/15/monitoring-linux-server-performance-with-procallator/#comments</comments>
		<pubDate>Fri, 15 Jun 2007 17:07:12 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Linux performance]]></category>
		<category><![CDATA[Linux Utilities]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/index.php/2007/06/15/monitoring-linux-server-performance-with-procallator/</guid>
		<description><![CDATA[I manage a fair number of Linux hosts, and like to keep tabs on how my systems are performing. One way I accomplish this is with procallator, which is a Perl script that collects performance data that can be graphed by orca. The graphs that orca produces are great awesome for trening server performance over [...]]]></description>
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		<slash:comments>5</slash:comments>
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		<title>Speeding up Oracle disk I/O on RHEL4 systems</title>
		<link>http://prefetch.net/blog/index.php/2007/04/14/speeding-up-oracle-disk-io-on-rhel4-systems/</link>
		<comments>http://prefetch.net/blog/index.php/2007/04/14/speeding-up-oracle-disk-io-on-rhel4-systems/#comments</comments>
		<pubDate>Sat, 14 Apr 2007 19:05:58 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Linux performance]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/index.php/2007/04/14/speeding-up-oracle-disk-io-on-rhel4-systems/</guid>
		<description><![CDATA[While poking around the web last wek, I came across a good paper from Redhat that describes how to utilize asynchronous and direct I/O with Oracle. I have been using the Oracle filesystemio_options=&#8221;SetAll&#8221; initialization parameter on a few RHEL 4 database servers to efficiently use memory, and had no idea idea that it provided the [...]]]></description>
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		<slash:comments>1</slash:comments>
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