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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Dear Björn,
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">I’m currently trying to compare scheduling overheads under different schedulers. To that end, I would like to understand the overhead name convention used in Litmus. After computing
some statistics by means of ft-compute-stats, I can see the following categories: CXS, RELEASE, RELEASE-LATENCY, SCHED2, SCHED, and SEND-RESCHED.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Please correct me, if I am wrong, I assume that CXS accounts for the overhead related to process switching (context-switch overhead) and SCHED + SCHED2 for process selection
(scheduling overhead). <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Do RELEASE and RELEASE-LATENCY account for the execution of a release ISR (release overhead) and the delay until the release ISR starts execution (event latency)?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">What does SEND-RESCHED account for?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Once a job is completed there is some kind of overhead involved like the one related to the trap generated by its completion, does this overhead fall under one of those categories?
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Best,
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Jorge<o:p></o:p></span></p>
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