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	<title>LCKMGR MODE - Revision history</title>
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	<updated>2026-05-29T21:02:43Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<id>https://wiki.vmssoftware.com/index.php?title=LCKMGR_MODE&amp;diff=606&amp;oldid=prev</id>
		<title>Darya.zelenina: Created page with &quot;&#039;&#039;&#039;LCKMGR_MODE&#039;&#039;&#039; is a system parameter that controls use of the Dedicated CPU Lock Manager on Alpha and Integrity servers. Setting LCKMGR_MODE t...&quot;</title>
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		<updated>2019-04-09T09:23:00Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;&amp;#039;&amp;#039;&amp;#039;LCKMGR_MODE&amp;#039;&amp;#039;&amp;#039; is a &lt;a href=&quot;/System_Parameters&quot; title=&quot;System Parameters&quot;&gt;system parameter&lt;/a&gt; that controls use of the Dedicated CPU Lock Manager on &lt;a href=&quot;/Alpha&quot; title=&quot;Alpha&quot;&gt;Alpha&lt;/a&gt; and &lt;a href=&quot;/Integrity&quot; title=&quot;Integrity&quot;&gt;Integrity&lt;/a&gt; servers. Setting LCKMGR_MODE t...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&amp;#039;&amp;#039;&amp;#039;LCKMGR_MODE&amp;#039;&amp;#039;&amp;#039; is a [[System Parameters|system parameter]] that controls use of the Dedicated CPU Lock Manager on [[Alpha]] and [[Integrity]] servers. Setting LCKMGR_MODE to a number greater than zero (0) indicates the number of CPUs that must be active before the Dedicated CPU Lock Manager is turned on.&lt;br /&gt;
&lt;br /&gt;
The Dedicated CPU Lock Manager performs all locking operations on a single dedicated CPU. This can improve system performance on large SMP systems with high MP_Synch associated with the lock manager.&lt;br /&gt;
&lt;br /&gt;
If the number of active CPUs is greater than or equal to LCKMGR_MODE, a LCKMGR_SERVER process is created to service locking operations. This process runs at a real-time priority of 63 and is always current.&lt;br /&gt;
&lt;br /&gt;
[[Category:System Parameters]]&lt;/div&gt;</summary>
		<author><name>Darya.zelenina</name></author>
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