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2026-05-20 - 14:07
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack3slot6.osadl.org (updated Wed May 20, 2026 12:45:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
41829911955,21cyclictest14-21ksoftirqd/008:00:110
524121170,6chrt4398-21/usr/sbin/munin10:10:321
41829910914,26cyclictest0-21swapper/009:45:150
41829910715,25cyclictest0-21swapper/007:40:140
41829910513,27cyclictest0-21swapper/010:10:110
41899910421,62cyclictest26-21ksoftirqd/108:50:141
41829910477,16cyclictest14-21ksoftirqd/008:55:140
41829910416,24cyclictest0-21swapper/010:15:110
418999987,68cyclictest0-21swapper/112:10:121
4182999711,41cyclictest0-21swapper/009:50:110
142922960,5chrt14293-21/usr/sbin/munin07:35:311
418999947,67cyclictest0-21swapper/107:50:231
418999909,61cyclictest0-21swapper/111:30:111
418999909,61cyclictest0-21swapper/111:30:111
4182999064,19cyclictest21031-21runrttasks09:25:100
4182999064,19cyclictest21031-21runrttasks09:25:100
4189998610,59cyclictest0-21swapper/108:20:121
418999858,15cyclictest0-21swapper/111:40:121
4182998562,18cyclictest14-21ksoftirqd/008:20:110
418999848,16cyclictest0-21swapper/108:15:231
418999846,17cyclictest0-21swapper/108:45:111
4189998410,58cyclictest0-21swapper/109:05:121
4182998456,19cyclictest14-21ksoftirqd/009:40:120
418999838,17cyclictest0-21swapper/111:25:121
418999837,17cyclictest0-21swapper/108:40:121
418999837,15cyclictest0-21swapper/109:00:141
4182998357,18cyclictest14-21ksoftirqd/010:40:220
4182998354,18cyclictest14-21ksoftirqd/009:35:140
418999829,15cyclictest0-21swapper/112:15:131
418999827,17cyclictest0-21swapper/107:30:121
418999827,14cyclictest0-21swapper/112:25:131
4189998210,57cyclictest0-21swapper/111:50:131
4182998252,20cyclictest14-21ksoftirqd/011:35:120
260828237,28sleep00-21swapper/007:05:170
418999818,16cyclictest0-21swapper/108:25:141
418999818,15cyclictest0-21swapper/111:00:151
418999817,17cyclictest0-21swapper/108:05:241
418999816,17cyclictest0-21swapper/110:25:131
418999816,16cyclictest0-21swapper/107:15:131
418999815,19cyclictest10024-21apt-get07:25:151
4182998151,21cyclictest14-21ksoftirqd/010:55:130
418999808,14cyclictest0-21swapper/109:10:121
418999807,14cyclictest0-21swapper/107:40:151
418999806,22cyclictest28061-21apt-get09:45:151
418999806,15cyclictest0-21swapper/110:00:111
4182998048,19cyclictest14-21ksoftirqd/008:30:120
418999798,17cyclictest0-21swapper/108:10:121
418999798,16cyclictest0-21swapper/110:30:141
418999797,54cyclictest0-21swapper/110:35:101
418999797,13cyclictest0-21swapper/111:35:141
418999796,17cyclictest0-21swapper/111:05:121
418999796,16cyclictest0-21swapper/111:20:121
418999796,13cyclictest0-21swapper/110:50:151
418999795,62cyclictest12568-21apt-get12:05:131
418999787,15cyclictest0-21swapper/111:55:141
418999787,14cyclictest0-21swapper/112:20:131
418999787,13cyclictest0-21swapper/111:45:131
418999786,15cyclictest0-21swapper/109:55:141
418999786,14cyclictest0-21swapper/107:55:151
4189997811,14cyclictest0-21swapper/109:15:131
4182997850,18cyclictest14-21ksoftirqd/011:00:140
418999779,53cyclictest0-21swapper/109:20:231
418999778,14cyclictest0-21swapper/110:15:131
418999777,13cyclictest0-21swapper/112:35:141
418999776,14cyclictest0-21swapper/112:30:111
418999776,14cyclictest0-21swapper/112:30:111
4182997744,21cyclictest14-21ksoftirqd/011:10:150
290427732,30sleep10-21swapper/107:05:221
418999767,14cyclictest0-21swapper/109:35:151
418999766,15cyclictest0-21swapper/112:00:151
418999765,18cyclictest21026-21apt-get09:25:121
418999765,18cyclictest21026-21apt-get09:25:121
4189997610,57cyclictest0-21swapper/108:35:101
418999757,15cyclictest0-21swapper/109:50:141
418999757,15cyclictest0-21swapper/107:20:141
418999757,12cyclictest0-21swapper/110:40:241
418999756,15cyclictest0-21swapper/109:30:141
418999756,15cyclictest0-21swapper/108:00:141
418999756,14cyclictest0-21swapper/110:55:121
418999756,10cyclictest0-21swapper/110:05:131
4182997525,42cyclictest14729-21cron10:40:000
418999746,21cyclictest4272-21apt-get07:10:161
4189997424,43cyclictest27419-21sort11:15:011
418999735,20cyclictest17201-21apt-get07:45:121
4182997341,19cyclictest0-21swapper/011:05:150
4182997313,46cyclictest0-21swapper/008:35:090
418999728,15cyclictest0-21swapper/109:40:131
4182997247,21cyclictest14-21ksoftirqd/011:15:110
4182997240,21cyclictest14-21ksoftirqd/007:10:160
4182997142,21cyclictest14-21ksoftirqd/010:05:110
418999696,18cyclictest1423-21apt-get08:30:131
4189996918,45cyclictest8644-21ntpq10:20:321
4182996944,21cyclictest14-21ksoftirqd/009:15:110
4182996939,23cyclictest14-21ksoftirqd/012:20:180
4182996936,21cyclictest0-21swapper/011:50:130
4189996817,45cyclictest11776-21systemctl09:00:011
4182996838,24cyclictest14-21ksoftirqd/008:05:400
4182996837,23cyclictest14-21ksoftirqd/008:45:160
418999677,14cyclictest0-21swapper/111:15:141
418999676,21cyclictest16979-21apt-get10:45:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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