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2026-04-29 - 00:52
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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 rackdslot0.osadl.org (updated Tue Apr 28, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2421099222,17cyclictest0-21swapper/009:26:560
2421099210,6cyclictest0-21swapper/008:24:490
2421099210,6cyclictest0-21swapper/008:24:490
2421299192,3cyclictest0-21swapper/208:10:012
24212991917,1cyclictest0-21swapper/209:48:532
24212991914,3cyclictest0-21swapper/212:12:372
2421199192,2cyclictest4399-21kernelversion10:20:151
2421199190,2cyclictest3985-21H222:10:211
24210991919,0cyclictest0-21swapper/009:15:160
24210991916,2cyclictest15847-21munin-run11:40:000
24210991915,3cyclictest1525-21lxd09:12:410
24210991914,1cyclictest0-21swapper/008:10:070
2421099190,18cyclictest870-21systemd-logind07:18:520
2421299182,15cyclictest14590-21grep11:35:192
24212991816,1cyclictest28-21ksoftirqd/207:40:212
24212991815,2cyclictest8304-21chrt12:22:262
24212991814,3cyclictest3987-21H222:10:212
24212991814,3cyclictest2911-21date08:25:022
24212991814,3cyclictest2911-21date08:25:012
24212991814,3cyclictest1523-21lxd10:10:412
2421299180,2cyclictest3987-21H222:10:212
2421299180,17cyclictest426-21systemd-udevd09:28:522
2421299180,17cyclictest1983-21systemctl10:15:192
2421299180,15cyclictest0-21swapper/209:33:312
2421199182,15cyclictest21-21ksoftirqd/108:53:191
2421199182,15cyclictest0-21swapper/107:28:361
24211991815,2cyclictest24588-21tr10:00:141
2421199181,16cyclictest3183-21cat11:15:191
2421199180,2cyclictest3985-21H222:10:211
2421099182,1cyclictest0-21swapper/010:13:290
2421099182,15cyclictest9-21ksoftirqd/009:22:470
24210991815,2cyclictest3979-21H222:10:210
24210991814,3cyclictest0-21swapper/009:38:170
2421099181,2cyclictest27270-21expr11:00:170
2421099181,16cyclictest3053-21systemd-logind07:46:530
2421099180,3cyclictest2654-21sendmail-mta12:14:260
2421099180,3cyclictest0-21swapper/010:20:200
2421099180,3cyclictest0-21swapper/007:24:500
2421099180,16cyclictest1079-21cups-browsed10:40:200
24212991716,1cyclictest28-21ksoftirqd/211:34:132
24212991715,2cyclictest0-21swapper/212:05:152
24212991715,1cyclictest0-21swapper/210:25:122
24212991715,1cyclictest0-21swapper/209:08:262
24212991715,1cyclictest0-21swapper/207:15:162
24212991714,2cyclictest898-21cpuspeed_turbos07:25:142
24212991714,2cyclictest870-21systemd-logind11:46:522
24212991714,2cyclictest3985-21H222:10:212
24212991714,2cyclictest3740-21pzem_current09:20:192
24212991714,2cyclictest3612-21cpuspeed_turbos08:25:142
24212991714,2cyclictest3053-21systemd-logind11:50:512
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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