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2026-04-04 - 14:43
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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 rackcslot4.osadl.org (updated Sat Apr 04, 2026 00:45:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17832952259182,62sleep00-21swapper/019:07:330
17832802258190,53sleep10-21swapper/119:07:241
19667972950,1chrt96-21kswapd000:20:170
179699700,4rtkit-daemon1795-21rtkit-daemon22:43:501
179699680,4rtkit-daemon1795-21rtkit-daemon21:52:261
179699610,20rtkit-daemon1783653-21cyclictest19:55:071
179699600,4rtkit-daemon1795-21rtkit-daemon21:54:190
179699540,3rtkit-daemon1795-21rtkit-daemon23:34:561
19754222500,5sleep10-21swapper/100:31:151
19370622500,1sleep10-21swapper/123:37:071
179699500,4rtkit-daemon1795-21rtkit-daemon19:21:211
19749302490,4sleep00-21swapper/000:30:240
179699480,4rtkit-daemon1795-21rtkit-daemon22:46:430
179699460,3rtkit-daemon1795-21rtkit-daemon20:51:510
178366299463,9cyclictest1821513-21apt-get20:45:131
178366299452,13cyclictest1790235-21apt-get19:25:121
18154752440,4chrt0-21swapper/120:30:011
178366299423,8cyclictest1819567-21apt-get20:40:121
178366299423,10cyclictest1811746-21apt-get20:20:131
178366299422,9cyclictest1910759-21apt-get23:00:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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