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2026-03-31 - 16:20
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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 rack1slot8.osadl.org (updated Tue Mar 31, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1597199930840,76cyclictest0-21swapper/007:30:200
1597299782724,25cyclictest24003-21grep07:30:201
1597199431356,61cyclictest0-21swapper/007:10:070
2286991520,12rtkit-daemon0-21swapper/008:00:430
2286991140,35rtkit-daemon2285-21rtkit-daemon10:12:060
159719911317,91cyclictest0-21swapper/010:55:580
159719911213,92cyclictest0-21swapper/009:48:580
2286991010,4rtkit-daemon2285-21rtkit-daemon11:27:331
2286991010,4rtkit-daemon2285-21rtkit-daemon11:27:321
159719910110,20cyclictest0-21swapper/010:54:590
228699960,4rtkit-daemon2285-21rtkit-daemon09:33:041
228699960,4rtkit-daemon2285-21rtkit-daemon09:33:041
1597199969,62cyclictest1189-21snmpd09:13:590
1597199959,79cyclictest0-21swapper/009:33:000
1597199959,79cyclictest0-21swapper/009:32:590
15971999474,13cyclictest0-21swapper/011:43:580
15972999311,67cyclictest0-21swapper/110:23:591
15971999217,27cyclictest0-21swapper/011:20:280
15971999112,32cyclictest0-21swapper/012:00:210
228699900,6rtkit-daemon2285-21rtkit-daemon07:07:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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