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2025-08-21 - 22:16
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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 rack5slot2.osadl.org (updated Thu Aug 21, 2025 12:44:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
175502203186,12sleep10-21swapper/107:05:311
178472188172,11sleep00-21swapper/007:09:230
175822181165,12sleep30-21swapper/307:05:583
178422174156,13sleep20-21swapper/207:09:212
303842440,0sleep10-21swapper/111:10:211
57742410,0sleep10-21swapper/110:42:011
60332130,0sleep10-21swapper/111:15:121
7112100,0sleep20-21swapper/212:17:432
280272100,0sleep20-21swapper/209:49:062
224712100,0sleep10-21swapper/112:29:061
180919993,3cyclictest8795-21munin-run07:55:000
180919982,3cyclictest6348-21perf08:55:000
180919980,4cyclictest23653-21cron07:20:000
180919972,4cyclictest5525-21awk11:15:000
181029955,0cyclictest20570-21kworker/3:211:47:463
181029955,0cyclictest20570-21kworker/3:211:02:593
181029955,0cyclictest20570-21kworker/3:210:07:013
181029955,0cyclictest20570-21kworker/3:209:11:033
181029950,5cyclictest29052-21apt-get07:30:013
181029950,5cyclictest0-21swapper/312:15:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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