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2025-07-16 - 13:17
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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 50 highest latencies:
System rackdslot2.osadl.org (updated Wed Jul 16, 2025 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
72512235168,22sleep00-21swapper/019:06:250
74652232165,23sleep30-21swapper/319:09:143
53902205171,23sleep20-21swapper/219:05:022
72342203171,21sleep10-21swapper/119:06:191
417621730,6sleep0797899cyclictest22:24:550
707321710,5sleep1797999cyclictest22:30:211
137291970,1ptp4l7924-21needreboot22:30:293
132591610,7getstats798199cyclictest00:26:103
213112580,2sleep30-21swapper/319:35:243
7978995532,5cyclictest9-21ksoftirqd/023:10:010
207782540,4sleep220782-21irqrtprio19:35:192
137291520,0ptp4l401ktimersoftd/321:27:473
137291510,1ptp4l401ktimersoftd/300:03:313
137291510,1ptp4l401ktimersoftd/300:03:313
137291430,1ptp4l391rcuc/320:31:583
137291410,0ptp4l401ktimersoftd/320:15:573
137291410,0ptp4l401ktimersoftd/319:50:143
7978994035,3cyclictest9-21ksoftirqd/023:15:000
42098400,3rtkit-daemon12769-21apt-get23:50:140
7980993935,2cyclictest33-21ksoftirqd/200:30:002
7978993933,3cyclictest9-21ksoftirqd/000:04:590
7978993933,3cyclictest9-21ksoftirqd/000:04:590
42098390,3rtkit-daemon29501-21memory21:00:280
132691390,2getstats0-21swapper/321:30:453
7980993833,2cyclictest33-21ksoftirqd/200:10:012
7980993821,16cyclictest33-21ksoftirqd/222:05:002
7978993834,3cyclictest9-21ksoftirqd/022:35:000
7978993834,2cyclictest9-21ksoftirqd/021:45:010
7978993833,3cyclictest12301-21cron23:50:000
42098380,4rtkit-daemon0-21swapper/020:39:520
7980993732,3cyclictest1837-21sshd00:34:322
7980993731,3cyclictest33-21ksoftirqd/222:45:012
7978993732,3cyclictest9-21ksoftirqd/023:35:010
7978993732,3cyclictest9-21ksoftirqd/023:35:000
7978993732,3cyclictest9-21ksoftirqd/019:35:010
7978993732,3cyclictest9-21ksoftirqd/000:30:000
7978993732,2cyclictest9-21ksoftirqd/019:19:590
42098370,26rtkit-daemon25-21ksoftirqd/120:55:231
7981993630,4cyclictest41-21ksoftirqd/323:16:453
7980993632,3cyclictest33-21ksoftirqd/220:00:002
7980993630,4cyclictest33-21ksoftirqd/220:11:022
7980993630,4cyclictest33-21ksoftirqd/220:11:022
7980993630,4cyclictest33-21ksoftirqd/219:27:102
7980993630,4cyclictest33-21ksoftirqd/200:37:182
7979993630,4cyclictest25-21ksoftirqd/121:40:111
7979993629,4cyclictest25-21ksoftirqd/121:58:001
7978993632,2cyclictest9-21ksoftirqd/023:20:000
7978993631,3cyclictest9-21ksoftirqd/022:15:190
7978993631,3cyclictest9-21ksoftirqd/021:30:000
7978993631,3cyclictest9-21ksoftirqd/021:10:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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