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	<title>Comments on: Optimizing MySQL and Apache for Low Memory Usage, Part 1</title>
	<atom:link href="http://emergent.urbanpug.com/?feed=rss2&#038;p=60" rel="self" type="application/rss+xml" />
	<link>http://emergent.urbanpug.com/?p=60</link>
	<description>Order from disorder - Thoughts about where technology is going.</description>
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		<title>By: intermittent MySQL crashes with error &#8220;Fatal error: cannot allocate memory for the buffer pool&#8221; &#124; XL-UAT</title>
		<link>http://emergent.urbanpug.com/?p=60&#038;cpage=1#comment-162088</link>
		<dc:creator><![CDATA[intermittent MySQL crashes with error &#8220;Fatal error: cannot allocate memory for the buffer pool&#8221; &#124; XL-UAT]]></dc:creator>
		<pubDate>Tue, 10 Mar 2015 22:09:43 +0000</pubDate>
		<guid isPermaLink="false">http://emergent.urbanpug.com/?p=60#comment-162088</guid>
		<description><![CDATA[[...] I found article Optimizing MySQL and Apache for Low Memory Usage, Part 1. For configuring Apache, the author recommends: &#8220;First off, Apache. My first statement is, if [...]]]></description>
		<content:encoded><![CDATA[<p>[&#8230;] I found article Optimizing MySQL and Apache for Low Memory Usage, Part 1. For configuring Apache, the author recommends: &#8220;First off, Apache. My first statement is, if [&#8230;]</p>
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		<title>By: Solution: Is my Apache2 setup leaking memory? #dev #fix #answer &#124; SevenNet</title>
		<link>http://emergent.urbanpug.com/?p=60&#038;cpage=1#comment-159864</link>
		<dc:creator><![CDATA[Solution: Is my Apache2 setup leaking memory? #dev #fix #answer &#124; SevenNet]]></dc:creator>
		<pubDate>Mon, 09 Feb 2015 05:08:06 +0000</pubDate>
		<guid isPermaLink="false">http://emergent.urbanpug.com/?p=60#comment-159864</guid>
		<description><![CDATA[[...] Low apache memory usage [...]]]></description>
		<content:encoded><![CDATA[<p>[&#8230;] Low apache memory usage [&#8230;]</p>
]]></content:encoded>
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		<title>By: A Question of Memory for an Apache server - Just just easy answers</title>
		<link>http://emergent.urbanpug.com/?p=60&#038;cpage=1#comment-129990</link>
		<dc:creator><![CDATA[A Question of Memory for an Apache server - Just just easy answers]]></dc:creator>
		<pubDate>Fri, 06 Sep 2013 08:16:55 +0000</pubDate>
		<guid isPermaLink="false">http://emergent.urbanpug.com/?p=60#comment-129990</guid>
		<description><![CDATA[[...] Low apache memory usage [...]]]></description>
		<content:encoded><![CDATA[<p>[&#8230;] Low apache memory usage [&#8230;]</p>
]]></content:encoded>
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	<item>
		<title>By: Is my Apache2 setup leaking memory? - Just just easy answers</title>
		<link>http://emergent.urbanpug.com/?p=60&#038;cpage=1#comment-129982</link>
		<dc:creator><![CDATA[Is my Apache2 setup leaking memory? - Just just easy answers]]></dc:creator>
		<pubDate>Fri, 06 Sep 2013 07:13:17 +0000</pubDate>
		<guid isPermaLink="false">http://emergent.urbanpug.com/?p=60#comment-129982</guid>
		<description><![CDATA[[...] Low apache memory usage [...]]]></description>
		<content:encoded><![CDATA[<p>[&#8230;] Low apache memory usage [&#8230;]</p>
]]></content:encoded>
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	<item>
		<title>By: tolinkup</title>
		<link>http://emergent.urbanpug.com/?p=60&#038;cpage=1#comment-102501</link>
		<dc:creator><![CDATA[tolinkup]]></dc:creator>
		<pubDate>Wed, 25 Jul 2012 13:40:44 +0000</pubDate>
		<guid isPermaLink="false">http://emergent.urbanpug.com/?p=60#comment-102501</guid>
		<description><![CDATA[nice post already bookmarked it]]></description>
		<content:encoded><![CDATA[<p>nice post already bookmarked it</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: abouthack</title>
		<link>http://emergent.urbanpug.com/?p=60&#038;cpage=1#comment-102500</link>
		<dc:creator><![CDATA[abouthack]]></dc:creator>
		<pubDate>Wed, 25 Jul 2012 13:39:53 +0000</pubDate>
		<guid isPermaLink="false">http://emergent.urbanpug.com/?p=60#comment-102500</guid>
		<description><![CDATA[Thank you very much for this nice post.

Really helped me setting my VPS]]></description>
		<content:encoded><![CDATA[<p>Thank you very much for this nice post.</p>
<p>Really helped me setting my VPS</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: VPS Hosting with HyperVM and Kloxo</title>
		<link>http://emergent.urbanpug.com/?p=60&#038;cpage=1#comment-80987</link>
		<dc:creator><![CDATA[VPS Hosting with HyperVM and Kloxo]]></dc:creator>
		<pubDate>Tue, 08 Mar 2011 06:02:23 +0000</pubDate>
		<guid isPermaLink="false">http://emergent.urbanpug.com/?p=60#comment-80987</guid>
		<description><![CDATA[[...] to reduce the memory load. If that&#8217;s not enough for you, also have a look at these pages for Apache and MySQL [...]]]></description>
		<content:encoded><![CDATA[<p>[&#8230;] to reduce the memory load. If that&#8217;s not enough for you, also have a look at these pages for Apache and MySQL [&#8230;]</p>
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	<item>
		<title>By: Tom V</title>
		<link>http://emergent.urbanpug.com/?p=60&#038;cpage=1#comment-66073</link>
		<dc:creator><![CDATA[Tom V]]></dc:creator>
		<pubDate>Wed, 31 Mar 2010 07:54:03 +0000</pubDate>
		<guid isPermaLink="false">http://emergent.urbanpug.com/?p=60#comment-66073</guid>
		<description><![CDATA[Very useful.  I&#039;ve had to configure a low RAM server and these tips have helped incredibly.]]></description>
		<content:encoded><![CDATA[<p>Very useful.  I&#8217;ve had to configure a low RAM server and these tips have helped incredibly.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: CooPs</title>
		<link>http://emergent.urbanpug.com/?p=60&#038;cpage=1#comment-64976</link>
		<dc:creator><![CDATA[CooPs]]></dc:creator>
		<pubDate>Sun, 21 Mar 2010 17:10:00 +0000</pubDate>
		<guid isPermaLink="false">http://emergent.urbanpug.com/?p=60#comment-64976</guid>
		<description><![CDATA[I really doubt that turning off hostname resolving would increese performance even noticeably and I have a good reason for you right here on why you&#039;d want it enabled: you can make access rules based on hostnames. If you know how DNS works you&#039;d understand why it&#039;s not a performance bump: All DNS lookups (even reverse lookups) are cached, and all OS do it locally. So for every unique IP it would only need to do the lookup once. After that the OS has the lookup cached in memory.

Also .htaccess is very useful and I don&#039;t see on how some file lookups could justify disabling it. I can only see why that would make sense in extreme cases: eg if you&#039;re hosting some kind of file server with a lot of traffic and no special per directory rewriting or acceess control or applications running on it.

If you&#039;re really looking for conserving memory I would recommend turning KeepAlive off completly. Having it enabled gives clients the ability to lock your children and with a maximum ammount of children set, that&#039;s a very bad idea unless you actually want people to time out. Turning it off worked great for me.]]></description>
		<content:encoded><![CDATA[<p>I really doubt that turning off hostname resolving would increese performance even noticeably and I have a good reason for you right here on why you&#8217;d want it enabled: you can make access rules based on hostnames. If you know how DNS works you&#8217;d understand why it&#8217;s not a performance bump: All DNS lookups (even reverse lookups) are cached, and all OS do it locally. So for every unique IP it would only need to do the lookup once. After that the OS has the lookup cached in memory.</p>
<p>Also .htaccess is very useful and I don&#8217;t see on how some file lookups could justify disabling it. I can only see why that would make sense in extreme cases: eg if you&#8217;re hosting some kind of file server with a lot of traffic and no special per directory rewriting or acceess control or applications running on it.</p>
<p>If you&#8217;re really looking for conserving memory I would recommend turning KeepAlive off completly. Having it enabled gives clients the ability to lock your children and with a maximum ammount of children set, that&#8217;s a very bad idea unless you actually want people to time out. Turning it off worked great for me.</p>
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	<item>
		<title>By: Alex</title>
		<link>http://emergent.urbanpug.com/?p=60&#038;cpage=1#comment-54974</link>
		<dc:creator><![CDATA[Alex]]></dc:creator>
		<pubDate>Mon, 09 Nov 2009 01:55:24 +0000</pubDate>
		<guid isPermaLink="false">http://emergent.urbanpug.com/?p=60#comment-54974</guid>
		<description><![CDATA[Thanks a lot for this clear and straight to the point article. My server was regularly becoming totally unresponsive because Apache would go crazy and trigger memory pages swapping, but following your directives it seems that I have finally solved my problem. My memory usage has been divided by 3, and at the same time requests are being served much more rapidly.]]></description>
		<content:encoded><![CDATA[<p>Thanks a lot for this clear and straight to the point article. My server was regularly becoming totally unresponsive because Apache would go crazy and trigger memory pages swapping, but following your directives it seems that I have finally solved my problem. My memory usage has been divided by 3, and at the same time requests are being served much more rapidly.</p>
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