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2026-06-05 - 20:02
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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 rackcslot4.osadl.org (updated Fri Jun 05, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15924552280215,51sleep10-21swapper/107:07:001
15923392264190,43sleep00-21swapper/007:05:440
179699860,4rtkit-daemon1775873-21ntpq12:10:211
179699860,4rtkit-daemon1775873-21ntpq12:10:201
179699690,4rtkit-daemon1795-21rtkit-daemon09:40:561
16343352670,3chrt0-21swapper/008:50:180
179699630,13rtkit-daemon1795-21rtkit-daemon11:04:321
179699570,3rtkit-daemon1795-21rtkit-daemon10:10:441
179699560,6rtkit-daemon1795-21rtkit-daemon08:25:140
179699550,5rtkit-daemon1764065-21apt-get11:55:120
179699520,19rtkit-daemon1795-21rtkit-daemon11:35:140
179699520,19rtkit-daemon1795-21rtkit-daemon11:35:140
179699510,21rtkit-daemon1592863-21cyclictest10:26:560
159287299513,13cyclictest1759716-21python311:50:010
159287299493,11cyclictest1726563-21python311:05:010
159287299492,15cyclictest1763907-21ls11:55:010
179699480,4rtkit-daemon1795-21rtkit-daemon09:08:010
179699480,22rtkit-daemon1638949-21vmstat09:00:240
179699470,3rtkit-daemon1795-21rtkit-daemon11:13:011
159287299477,8cyclictest1708337-21latency_hist10:40:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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