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2026-06-13 - 17:57
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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 rack3slot6.osadl.org (updated Sat Jun 13, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7568210015,39sleep00-21swapper/007:08:430
771629820,31sleep10-21swapper/107:09:471
7875998532,17cyclictest14-21ksoftirqd/007:36:300
7875998332,45cyclictest14-21ksoftirqd/007:51:540
7875998037,17cyclictest14-21ksoftirqd/011:25:120
7875997847,15cyclictest14-21ksoftirqd/008:50:310
7875997531,28cyclictest14-21ksoftirqd/008:00:130
13802750,6chrt1376-21grep09:50:260
7878997432,38cyclictest26-21ksoftirqd/112:15:341
7875997335,18cyclictest14-21ksoftirqd/007:50:000
787599726,56cyclictest15421-21apt-get12:00:130
7875997134,31cyclictest14-21ksoftirqd/010:20:000
7875997133,32cyclictest14-21ksoftirqd/012:40:000
7875997125,41cyclictest14-21ksoftirqd/012:15:300
7875997038,26cyclictest15924-21telnet07:30:180
7875997036,28cyclictest14-21ksoftirqd/008:15:270
7875997036,28cyclictest14-21ksoftirqd/008:15:270
7875997034,31cyclictest14-21ksoftirqd/011:15:420
7875996938,25cyclictest14-21ksoftirqd/009:40:200
7875996937,26cyclictest503-21snmpd07:27:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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