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2026-03-14 - 21:57
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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 Mar 14, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2293321196,51sleep122605-21/usr/sbin/munin07:05:171
24360991006,72cyclictest0-21swapper/109:30:101
243559910069,16cyclictest14-21ksoftirqd/007:55:140
2436099987,71cyclictest0-21swapper/108:00:141
2436099987,15cyclictest0-21swapper/110:05:121
24355999763,22cyclictest243232sleep011:40:130
24355999668,15cyclictest14-21ksoftirqd/009:30:130
24355999463,19cyclictest14-21ksoftirqd/008:10:120
24360999311,21cyclictest0-21swapper/111:40:121
24355999365,18cyclictest2414-21kworker/0:108:25:110
2391429319,27sleep00-21swapper/007:07:170
24355999263,17cyclictest14-21ksoftirqd/008:55:120
24355999262,16cyclictest14-21ksoftirqd/009:20:140
24355998958,20cyclictest284572sleep007:20:130
24355998757,19cyclictest14-21ksoftirqd/010:20:140
24355998556,20cyclictest14-21ksoftirqd/012:15:120
24360998338,24cyclictest26-21ksoftirqd/111:35:111
24360998327,16cyclictest3032-21head12:10:261
24355998262,12cyclictest14-21ksoftirqd/007:30:120
24355998255,18cyclictest14-21ksoftirqd/011:20:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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