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	<title>Pablowe &#187; Performance</title>
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	<description>%&#62; random tech;</description>
	<lastBuildDate>Fri, 30 Sep 2011 16:54:28 +0000</lastBuildDate>
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		<title>Installing HandlerSocket on RHEL 6 + Percona-Server 5.5 in Five(ish) Easy Steps</title>
		<link>http://www.pablowe.net/2011/09/installing-handlersocket-on-rhel-6-percona-server-5-5-in-fiveish-easy-steps/</link>
		<comments>http://www.pablowe.net/2011/09/installing-handlersocket-on-rhel-6-percona-server-5-5-in-fiveish-easy-steps/#comments</comments>
		<pubDate>Wed, 28 Sep 2011 19:59:41 +0000</pubDate>
		<dc:creator>rlowe</dc:creator>
				<category><![CDATA[HandlerSocket]]></category>
		<category><![CDATA[MySQL]]></category>
		<category><![CDATA[MySQL Administration]]></category>
		<category><![CDATA[Performance]]></category>
		<category><![CDATA[Random Tech]]></category>

		<guid isPermaLink="false">http://www.pablowe.net/?p=767</guid>
		<description><![CDATA[As a followup to my previous post on installing HandlerSocket on CentOS 5 + Percona-Server 5.1, I&#8217;ve been asked to provide an updated HOWTO for RHEL 6 + Percona-Server 5.5. Although very similar to the original steps, there are some new traps (RHEL 6 comes with SELinux enabled) and there are some new ec2 gotchas! [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>(More) Numbers Everyone Should Know</title>
		<link>http://www.pablowe.net/2011/09/more-numbers-everyone-should-know/</link>
		<comments>http://www.pablowe.net/2011/09/more-numbers-everyone-should-know/#comments</comments>
		<pubDate>Tue, 27 Sep 2011 23:58:02 +0000</pubDate>
		<dc:creator>rlowe</dc:creator>
				<category><![CDATA[Performance]]></category>
		<category><![CDATA[Random Tech]]></category>

		<guid isPermaLink="false">http://www.pablowe.net/?p=742</guid>
		<description><![CDATA[By now, everybody should be aware of Jeff Dean&#8217;s Numbers Everyone Should Know: L1 cache reference 0.5 ns Branch mispredict 5 ns L2 cache reference 7 ns Mutex lock/unlock 100 ns Main memory reference 100 ns Compress 1K bytes with Zippy 10,000 ns Send 2K bytes over 1 Gbps network 20,000 ns Read 1 MB [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Connecting to HandlerSocket with localhost vs. 127.0.0.1</title>
		<link>http://www.pablowe.net/2011/02/connecting-to-handlersocket-with-localhost-vs-127-0-0-1/</link>
		<comments>http://www.pablowe.net/2011/02/connecting-to-handlersocket-with-localhost-vs-127-0-0-1/#comments</comments>
		<pubDate>Sat, 05 Feb 2011 04:56:22 +0000</pubDate>
		<dc:creator>rlowe</dc:creator>
				<category><![CDATA[HandlerSocket]]></category>
		<category><![CDATA[MySQL Performance]]></category>
		<category><![CDATA[Performance]]></category>
		<category><![CDATA[Random Tech]]></category>

		<guid isPermaLink="false">http://www.pablowe.net/?p=628</guid>
		<description><![CDATA[Using Net::HandlerSocket, here are some fun numbers for a single connection (open &#038; close). When connecting to &#8220;localhost&#8221;, here&#8217;s the strace: open("/etc/hosts", O_RDONLY) = 3 fcntl(3, F_GETFD) = 0 fcntl(3, F_SETFD, FD_CLOEXEC) = 0 fstat(3, {st_mode=S_IFREG&#124;0644, st_size=187, ...}) = 0 mmap(NULL, 4096, PROT_READ&#124;PROT_WRITE, MAP_PRIVATE&#124;MAP_ANONYMOUS, -1, 0) = 0x2b909a1a3000 read(3, "# Do not remove the following [...]]]></description>
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		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>Knowing your PERC 6/i BBU</title>
		<link>http://www.pablowe.net/2010/02/knowing-you-perc-6i-bbu/</link>
		<comments>http://www.pablowe.net/2010/02/knowing-you-perc-6i-bbu/#comments</comments>
		<pubDate>Sat, 06 Feb 2010 00:50:33 +0000</pubDate>
		<dc:creator>rlowe</dc:creator>
				<category><![CDATA[Nagios]]></category>
		<category><![CDATA[Performance]]></category>
		<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Monitoring]]></category>
		<category><![CDATA[RAID]]></category>

		<guid isPermaLink="false">http://www.pablowe.net/?p=331</guid>
		<description><![CDATA[I&#8217;ve recently become supremely disappointed in the availability of Nagios checks for RAID cards. Too often, I see administrators rely on chance (or their hosting provider) to discover failed drives, a dying BBU, or a degrading capacity on their RAID cards. So I began work on check_raid (part of check_mysql_all) to provide a suite of [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>ATTN: WordPress Theme &amp; Plug-In Developers</title>
		<link>http://www.pablowe.net/2008/10/attn-wordpress-theme-plug-in-developers/</link>
		<comments>http://www.pablowe.net/2008/10/attn-wordpress-theme-plug-in-developers/#comments</comments>
		<pubDate>Thu, 30 Oct 2008 04:20:44 +0000</pubDate>
		<dc:creator>rlowe</dc:creator>
				<category><![CDATA[Performance]]></category>
		<category><![CDATA[Random Tech]]></category>
		<category><![CDATA[Minify]]></category>

		<guid isPermaLink="false">http://www.pablowe.net/?p=154</guid>
		<description><![CDATA[Please minify all JavaScript and CSS files. The size of the main page at pablowe.net was reduced by 20% by this simple, 30-second act. CSS::Minify JavaScript::Minifier Thank You!]]></description>
		<wfw:commentRss>http://www.pablowe.net/2008/10/attn-wordpress-theme-plug-in-developers/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>The Awkward Stage of Scaling</title>
		<link>http://www.pablowe.net/2008/10/the-awkward-stage-of-scaling/</link>
		<comments>http://www.pablowe.net/2008/10/the-awkward-stage-of-scaling/#comments</comments>
		<pubDate>Fri, 10 Oct 2008 02:19:57 +0000</pubDate>
		<dc:creator>rlowe</dc:creator>
				<category><![CDATA[MySQL]]></category>
		<category><![CDATA[MySQL Performance]]></category>
		<category><![CDATA[Performance]]></category>
		<category><![CDATA[Data Sharding]]></category>
		<category><![CDATA[Functional Partitioning]]></category>

		<guid isPermaLink="false">http://www.pablowe.net/?p=134</guid>
		<description><![CDATA[A lot of my clients are in a position where their database performance is deteriorating but they are not &#8220;big enough&#8221; (or not willing/able to) explore sharding all of their data structures. They&#8217;re too big for the solution to be adding another read slave, but too small to justify the resources for re-designing their architecture. [...]]]></description>
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		<slash:comments>0</slash:comments>
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