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2026-03-14 - 20:47
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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 Sat Mar 14, 2026 12:45:18)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221772215150,21sleep00-21swapper/007:08:170
220932201162,26sleep30-21swapper/307:07:113
220672200161,26sleep20-21swapper/207:06:502
219992199161,25sleep10-21swapper/107:05:561
325752640,0sleep10-21swapper/107:30:001
157442610,0sleep20-21swapper/209:50:102
188062600,0sleep30-21swapper/309:13:183
185472590,0sleep10-21swapper/109:12:441
2239399150,13cyclictest0-21swapper/109:50:191
241472140,0sleep30-21swapper/308:20:003
2238399130,9cyclictest240-21systemd-journal09:28:580
2240199120,11cyclictest30019-21/usr/sbin/munin10:50:182
2238399118,1cyclictest9-21ksoftirqd/008:20:000
22383991110,1cyclictest9-21ksoftirqd/011:55:000
22383991110,1cyclictest9-21ksoftirqd/008:35:000
2240199108,1cyclictest28-21ksoftirqd/208:35:002
2240199100,8cyclictest24751-21munin-node07:34:272
2238399108,1cyclictest9-21ksoftirqd/007:15:010
224109999,0cyclictest35-21ksoftirqd/310:57:423
224109998,1cyclictest35-21ksoftirqd/307:41:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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