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2026-03-18 - 20:22
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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 Wed Mar 18, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24400942262180,19sleep00-21swapper/007:07:040
24400632258186,28sleep10-21swapper/107:06:451
252794021590,2sleep10-21swapper/110:01:311
179699810,4rtkit-daemon1795-21rtkit-daemon10:14:151
179699760,4rtkit-daemon1795-21rtkit-daemon11:22:211
179699720,4rtkit-daemon1795-21rtkit-daemon07:35:271
179699700,4rtkit-daemon1795-21rtkit-daemon07:26:431
179699650,17rtkit-daemon0-21swapper/011:14:401
244049799592,37cyclictest2507541-21apt-get09:35:140
244049799561,36cyclictest2568570-21apt-get11:00:110
179699560,3rtkit-daemon1795-21rtkit-daemon09:20:440
244049799553,32cyclictest2561355-21apt-get10:50:150
244049799543,34cyclictest2611450-21apt-get12:00:130
244049799530,29cyclictest2488856-21diskmemload12:34:370
24765722520,4sleep00-21swapper/008:35:230
244049799522,32cyclictest2600862-21apt-get11:45:150
244049799522,31cyclictest2590197-21apt-get11:30:120
244049799520,34cyclictest2514241-21apt-get09:45:270
179699520,4rtkit-daemon1795-21rtkit-daemon11:27:520
25647002510,4sleep10-21swapper/110:54:551
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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