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<a accesskey="3" href="page.php?w=O%281%29_scheduler&amp;p=2">3.Next</a>
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<p>An <b>O(1) scheduler</b> (pronounced "O of 1 scheduler", "Big O of 1 scheduler", or "constant time scheduler") is a <a href="page.php?w=kernel_%28operating_system%29">kernel</a> <a href="page.php?w=scheduling_%28computing%29">scheduling</a> design that can schedule <a href="page.php?w=process_%28computing%29">processes</a> within a constant amount of time, regardless of how many processes are running on the <a href="page.php?w=operating_system">operating system</a>. This is an improvement over  previously used <a href="page.php?w=O%28n%29_scheduler">O(n) schedulers</a>,</p><p>
<a accesskey="3" href="page.php?w=O%281%29_scheduler&amp;p=2">3.Next</a>
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