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2026-04-14 - 14:24
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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 Tue Apr 14, 2026 12:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
72122850,35sleep126-21ksoftirqd/109:05:321
217912830,6sleep10-21swapper/109:45:371
29766997734,37cyclictest14-21ksoftirqd/010:10:200
2931827716,52sleep00-21swapper/007:07:170
29770997634,17cyclictest26-21ksoftirqd/112:04:291
29770997234,13cyclictest26-21ksoftirqd/107:39:581
29766997232,16cyclictest14-21ksoftirqd/011:20:000
295752726,52sleep1507-21ntpd07:09:301
29766997134,14cyclictest14-21ksoftirqd/007:15:070
29766997129,15cyclictest14-21ksoftirqd/009:05:000
29766997038,27cyclictest14-21ksoftirqd/008:50:160
29766997038,27cyclictest14-21ksoftirqd/008:50:160
29766996957,8cyclictest14-21ksoftirqd/010:35:340
29766996957,8cyclictest14-21ksoftirqd/008:12:570
29770996828,16cyclictest26-21ksoftirqd/108:45:001
29766996833,8cyclictest14-21ksoftirqd/010:45:190
29766996830,15cyclictest14-21ksoftirqd/012:40:010
29766996830,15cyclictest14-21ksoftirqd/008:20:000
29766996828,15cyclictest14-21ksoftirqd/007:40:000
29770996736,25cyclictest26-21ksoftirqd/108:05:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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