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2026-04-09 - 10:58
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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 Thu Apr 09, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14089272284243,27sleep00-21swapper/019:08:030
14087842258191,52sleep10-21swapper/119:06:311
14563312600,2sleep11456330-21grep21:00:241
179699450,3rtkit-daemon1795-21rtkit-daemon23:01:551
179699440,3rtkit-daemon0-21swapper/022:19:380
179699440,11rtkit-daemon0-21swapper/022:45:230
179699430,3rtkit-daemon0-21swapper/019:13:240
179699420,3rtkit-daemon0-21swapper/020:53:000
14488402420,1sleep00-21swapper/020:45:120
179699400,3rtkit-daemon0-21swapper/019:34:190
1409249993632,2cyclictest1426988-21apt-config19:50:021
1409249993632,2cyclictest1413655-21apt-get19:20:031
15672542350,7sleep00-21swapper/023:41:500
15349712340,5sleep00-21swapper/022:55:300
140924999328,5cyclictest806-21in:imuxsock20:19:591
1409249993126,3cyclictest1456796-1kworker/1:2H21:05:451
1409249993124,5cyclictest1573382-21grep23:50:231
179699300,5rtkit-daemon1459175-21diskmemload23:37:550
179699300,5rtkit-daemon1453318-21diskstats20:55:160
1409249993023,5cyclictest1416583-21gltestperf19:25:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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