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2025-05-03 - 01:19
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 20 highest latencies:
System rack8slot4.osadl.org (updated Fri May 02, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11447742247187,19sleep60-21swapper/607:09:586
11446662243182,20sleep40-21swapper/407:08:284
11445012228169,20sleep00-21swapper/007:06:470
11446942223190,21sleep30-21swapper/307:08:513
11446132223194,18sleep50-21swapper/507:07:405
11447552222164,19sleep70-21swapper/707:09:437
11447502216185,20sleep20-21swapper/207:09:382
11445292212180,20sleep10-21swapper/107:07:121
121196221130,1sleep7851rcuc/709:11:307
1144991995910,25cyclictest0-21swapper/709:42:257
114497299360,29cyclictest1322073-21sh12:35:012
1144991993229,2cyclictest1302974-21latency_hist12:00:007
114497299320,28cyclictest0-21swapper/211:16:302
114497299320,28cyclictest0-21swapper/210:46:292
114497299320,1cyclictest1294926-21munin-run11:45:002
114497699310,30cyclictest1175690-21sh08:05:014
1144972993127,1cyclictest0-21swapper/207:48:232
1144972993127,0cyclictest0-21swapper/211:36:302
114497299310,1cyclictest1227621-21apt-get09:41:302
1144991993028,1cyclictest1276069-21turbostat.cron11:10:007
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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