http://wiki.define-technology.com/mediawiki-1.35.0/index.php?action=history&feed=atom&title=Calculating_Fairshare_-_bhpart 2026-05-04T17:29:47Z Revision history for this page on the wiki MediaWiki 1.35.0 http://wiki.define-technology.com/mediawiki-1.35.0/index.php?title=Calculating_Fairshare_-_bhpart&diff=1626&oldid=prev 2013-01-08T12:08:57Z

<p>Created page with &quot;Typical Fairshare Formula: &lt;syntaxhighlight&gt; dynamic_priority = number_shares / (cpu_time * CPU_TIME_FACTOR + run_time * RUN_TIME_FACTOR + (1 + job_slots) * RUN_JOB_FACTOR + fairshare_...&quot;</p> <p><b>New page</b></p><div>Typical Fairshare Formula: <br /> <br /> &lt;syntaxhighlight&gt;<br /> dynamic_priority = number_shares / (cpu_time * CPU_TIME_FACTOR + run_time * RUN_TIME_FACTOR + (1 + job_slots) * RUN_JOB_FACTOR + fairshare_adjustment*FAIRSHARE_ADJUSTMENT_FACTOR).<br /> &lt;/syntaxhighlight&gt;<br /> <br /> For your case, it will be:<br /> &lt;syntaxhighlight&gt;<br /> Dynamic_priority = number_share / (cpu_time * 0.7 + run_time * 0.7 + (1 + job_slots) * 3)<br /> &lt;/syntaxhighlight&gt;<br /> <br /> The only trick here is that internal calculation uses hour as unit for cpu_time and run_time value, but the bhpart display values are in second. So, ultimately, the formula will become:<br /> <br /> &lt;syntaxhighlight&gt;<br /> Dynamic_priority = number_share / (bhpart_cpu_time/3600 * 0.7 + bhpart_run_time/3600 * 0.7 + (1 + job_slots) * 3)<br /> &lt;/syntaxhighlight&gt;<br /> <br /> Lets give a try:<br /> &lt;syntaxhighlight&gt;<br /> USER/GROUP SHARES PRIORITY STARTED RESERVED CPU_TIME RUN_TIME ADJUST<br /> navarrop 1000 9.031 4 0 205487.2 286841 0.000<br /> <br /> So, dynamic_priority = 1000 / (205487.2 / 3600 * 0.7 + 286841 / 3600 * 0.7 + (1 + 4) * 3)<br /> = 1000 / (39.95 + 55.77 + 15)<br /> = 1000/ 110.72<br /> = 9.031<br /> &lt;/syntaxhighlight&gt;</div>

Michael