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	<title>Performance Jungle</title>
	<link>http://abstractinitiative.com/PerformanceJungle</link>
	<description>Technology, Performance, and other nifty stuff</description>
	<lastBuildDate>Thu, 18 Mar 2010 16:00:21 +0000</lastBuildDate>
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		<title>Infrastructure as a Service (IaaS) &#8211; Why? What about security? What about SOA?</title>
		<description><![CDATA[IaaS or "Infrastructure as a Service" is a concept and frequently offered product in the Cloud Computing space that currently appears to have as much pervasiveness as any of the other service types. <a href="http://abstractinitiative.com/PerformanceJungle/2010/03/infrastructure-as-a-service-iaas-why-what-about-security-what-about-soa/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://abstractinitiative.com/PerformanceJungle/2010/03/infrastructure-as-a-service-iaas-why-what-about-security-what-about-soa/</link>
			</item>
	<item>
		<title>Haiti</title>
		<description><![CDATA[You&#8217;ve probably heard about the recent disaster in Haiti. The Abstract Initiative team have been working with a variety of organizations to assist with this tragedy. Please consider helping in this, their darkest hour. If you are an organization that &#8230; <a href="http://abstractinitiative.com/PerformanceJungle/2010/01/haiti/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://abstractinitiative.com/PerformanceJungle/2010/01/haiti/</link>
			</item>
	<item>
		<title>GPFS Tips and Tricks</title>
		<description><![CDATA[If you want to mount a file system read-only (for this example, let&#8217;s say the gpfs file system is named &#8216;bob&#8216;): echo &#8216;ro&#8217; &#62; /var/mmfs/etc/localMountOptions.bob (remember, &#8216;bob&#8217; is the name of the fs) &#8211; restart gpfs on that node. If &#8230; <a href="http://abstractinitiative.com/PerformanceJungle/2010/01/gpfs-tips-and-tricks/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://abstractinitiative.com/PerformanceJungle/2010/01/gpfs-tips-and-tricks/</link>
			</item>
	<item>
		<title>AIX 5.3 ORA-27126: unable to lock shared memory segment in core</title>
		<description><![CDATA[you set lock_sga=true didn't you?

This doesn't appear to be documented many places, so I'll put it here. There can be a tangible performance increase to 'locking' SGA to pinned memory. Paging spaces are, after all, on a slower medium (disk). In AIX 5.3 you also need to 'pin' shared memory. (SGA is shared memory) <a href="http://abstractinitiative.com/PerformanceJungle/2009/11/aix-53-ora-27126-unable-to-lock-shared-memory-segment-in-core/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://abstractinitiative.com/PerformanceJungle/2009/11/aix-53-ora-27126-unable-to-lock-shared-memory-segment-in-core/</link>
			</item>
	<item>
		<title>Error Checking vs. Exception Trapping</title>
		<description><![CDATA[With the increased popularity of older object oriented languages, and the increased pervasiveness of newer ones there is also an increased practice of using exceptions in place of checking return values. This is commonly seen in J2EE apps, and increasingly &#8230; <a href="http://abstractinitiative.com/PerformanceJungle/2009/11/error-checking-vs-exception-trapping/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://abstractinitiative.com/PerformanceJungle/2009/11/error-checking-vs-exception-trapping/</link>
			</item>
	<item>
		<title>0516-1734 chvg: Warning, savebase failed. Please manually run &#8216;savebase&#8217; before rebooting</title>
		<description><![CDATA[This is an AIX error message that you may run into if you happen to be doing creative things with rootvg, mirroring, and your bootlist. It is sometimes a signal that your /dev/ipldevice device is gone. Here is one way to fix it. <a href="http://abstractinitiative.com/PerformanceJungle/2009/09/0516-1734-chvg-warning-savebase-failed-please-manually-run-savebase-before-rebooting/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://abstractinitiative.com/PerformanceJungle/2009/09/0516-1734-chvg-warning-savebase-failed-please-manually-run-savebase-before-rebooting/</link>
			</item>
	<item>
		<title>Apps.gov &#8211; GSA&#8217;s iTunes Store for Cloud Computing?</title>
		<description><![CDATA[If you haven&#8217;t yet seen the hype, GSA is currently hosting APPS.GOV which is an online marketplace for Cloud Computing applications for US Federal Agencies. This is driven by the Federal Cloud Computing Initiative. There are a number of categories &#8230; <a href="http://abstractinitiative.com/PerformanceJungle/2009/09/appsgov-gsas-itunes-store-for-cloud-computing/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://abstractinitiative.com/PerformanceJungle/2009/09/appsgov-gsas-itunes-store-for-cloud-computing/</link>
			</item>
	<item>
		<title>Using Micro-Blogging Tools To Improve Performance&#8230;</title>
		<description><![CDATA[&#8220;More Software&#8221; and &#8220;More Infrastructure&#8221; rarely improves system performance. But if you manage a large or geographically diverse infrastructure, these Web 2.0 tools can be rather helpful. Whether you&#8217;re experiencing a performance issue or running performance tests &#8211; having a &#8230; <a href="http://abstractinitiative.com/PerformanceJungle/2009/09/using-micro-blogging-tools-to-improve-performance/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://abstractinitiative.com/PerformanceJungle/2009/09/using-micro-blogging-tools-to-improve-performance/</link>
			</item>
	<item>
		<title>AIX Security Hardening Script</title>
		<description><![CDATA[Many systems administrators have been faced with a requirement to &#8220;lock down&#8221; an AIX system. There are many ways to do this, Bastille-UNIX, AIXPert, sorting through NIST 800-53, or just manually locking down the system bit by bit. There are &#8230; <a href="http://abstractinitiative.com/PerformanceJungle/2009/09/aix-security-hardening-script/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://abstractinitiative.com/PerformanceJungle/2009/09/aix-security-hardening-script/</link>
			</item>
	<item>
		<title>[CheapHA-HPC] Viral Grid Computing</title>
		<description><![CDATA[Viral Grid Computing Summary This computing model has been around for a long time. I know this because the principal architects here at Abstract Initiative, LLC have been doing it for a long time &#8211; around 10 years in some &#8230; <a href="http://abstractinitiative.com/PerformanceJungle/2009/09/cheapha-hpc-viral-grid-computing/">Continue reading <span class="meta-nav">&#8594;</span></a>]]></description>
		<link>http://abstractinitiative.com/PerformanceJungle/2009/09/cheapha-hpc-viral-grid-computing/</link>
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