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2026-03-10 - 07:43
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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
Characteristics of the 20 highest latencies:
System rack1slot1.osadl.org (updated Tue Mar 10, 2026 00:45:20)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
167742209150,48sleep30-21swapper/319:07:473
166372202161,27sleep20-21swapper/219:06:022
168332200163,24sleep00-21swapper/019:08:330
167572198160,25sleep10-21swapper/119:07:331
263522560,0sleep30-21swapper/320:35:143
1703999140,12cyclictest0-21swapper/100:15:151
1702699143,4cyclictest22124-21apt-get22:05:110
1702699140,5cyclictest24833-21date19:25:000
1702699140,1cyclictest22785-21ssh21:25:120
17050991311,1cyclictest28-21ksoftirqd/221:30:012
57992120,0sleep10-21swapper/121:44:121
17058991211,1cyclictest35-21ksoftirqd/323:10:003
1702699125,1cyclictest9336-21ssh22:30:110
1702699120,6cyclictest15218-21/usr/sbin/munin00:00:190
1702699115,1cyclictest6375-21ssh21:45:070
1702699115,1cyclictest12752-1kworker/u9:122:27:340
1705099100,9cyclictest61650irq/122-eno122:19:282
1702699105,1cyclictest31762-21ssh22:58:360
1702699105,1cyclictest10703-21ssh21:10:150
1702699100,6cyclictest9931-21diskmemload23:58:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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