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2025-11-26 - 08:07
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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 Nov 26, 2025 00:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
284709911072,26cyclictest14-21ksoftirqd/022:45:130
284709910912,82cyclictest0-21swapper/019:50:130
284709910873,23cyclictest14-21ksoftirqd/020:20:140
28475991068,54cyclictest6418-21diskmemload21:10:131
284709910513,79cyclictest0-21swapper/020:55:140
284709910260,30cyclictest14-21ksoftirqd/021:50:150
284709910212,76cyclictest0-21swapper/020:25:140
284709910212,76cyclictest0-21swapper/020:25:130
284709910211,28cyclictest0-21swapper/000:25:120
284709910114,74cyclictest0-21swapper/000:30:130
284709910011,28cyclictest0-21swapper/022:15:230
28470999955,32cyclictest14-21ksoftirqd/023:25:150
28470999951,35cyclictest14-21ksoftirqd/020:15:150
28470999941,47cyclictest504-21snmpd20:30:130
28470999829,52cyclictest0-21swapper/021:55:110
28470999736,48cyclictest14-21ksoftirqd/022:35:140
28470999734,48cyclictest0-21swapper/019:20:120
28470999731,51cyclictest0-21swapper/021:25:100
28470999645,38cyclictest14-21ksoftirqd/023:00:230
28470999545,34cyclictest14-21ksoftirqd/021:40:150
28470999537,46cyclictest14-21ksoftirqd/022:00:260
28470999533,50cyclictest0-21swapper/019:45:140
2803529522,26sleep00-21swapper/019:07:240
2847099945,69cyclictest14-21ksoftirqd/019:15:130
28470999348,33cyclictest14-21ksoftirqd/021:35:190
28470999339,36cyclictest14-21ksoftirqd/019:25:170
28470999329,50cyclictest0-21swapper/019:30:130
28470999328,46cyclictest0-21swapper/023:40:140
28470999228,43cyclictest0-21swapper/000:20:140
28470999227,45cyclictest0-21swapper/019:55:140
28470999211,68cyclictest0-21swapper/020:00:160
28470999211,68cyclictest0-21swapper/020:00:160
28470999211,62cyclictest0-21swapper/023:10:230
2847099918,63cyclictest443-21systemd-logind21:45:150
28470999124,49cyclictest0-21swapper/021:20:150
28470999112,63cyclictest0-21swapper/000:15:120
2847099907,59cyclictest26702-21runrttasks20:35:160
28470999046,33cyclictest0-21swapper/022:40:180
28470999046,33cyclictest0-21swapper/022:40:170
28470999015,52cyclictest0-21swapper/023:20:130
28470999012,60cyclictest0-21swapper/021:10:160
28470999011,61cyclictest0-21swapper/021:30:150
28470999011,58cyclictest0-21swapper/021:00:150
28470998916,52cyclictest0-21swapper/023:55:130
28470998913,57cyclictest0-21swapper/000:35:170
2847099886,57cyclictest32027-21apt-get22:20:130
28470998836,33cyclictest14-21ksoftirqd/022:50:120
28470998812,56cyclictest0-21swapper/023:15:140
28475998733,44cyclictest26-21ksoftirqd/120:45:131
28470998726,47cyclictest833-21apache221:15:120
28470998717,48cyclictest0-21swapper/020:50:130
28470998716,51cyclictest0-21swapper/020:40:120
28470998715,50cyclictest0-21swapper/000:10:130
28470998712,62cyclictest0-21swapper/023:45:130
28470998710,59cyclictest0-21swapper/022:55:140
28470998639,30cyclictest14-21ksoftirqd/020:10:170
28470998639,30cyclictest14-21ksoftirqd/020:10:160
28470998618,49cyclictest0-21swapper/023:05:140
28470998613,55cyclictest0-21swapper/022:10:150
28470998612,25cyclictest0-21swapper/019:10:160
28470998518,47cyclictest0-21swapper/000:00:170
28470998516,50cyclictest0-21swapper/023:50:240
28470998428,38cyclictest14-21ksoftirqd/019:40:110
28470998412,54cyclictest0-21swapper/022:25:150
28470998332,32cyclictest14-21ksoftirqd/022:30:120
28470998318,46cyclictest0-21swapper/023:30:240
28470998310,53cyclictest0-21swapper/019:35:170
28470998215,46cyclictest0-21swapper/020:45:160
28470998215,46cyclictest0-21swapper/020:05:210
28470998116,47cyclictest0-21swapper/021:05:130
28470998114,48cyclictest0-21swapper/000:05:130
276142800,6sleep10-21swapper/119:05:291
28470997813,47cyclictest0-21swapper/023:35:130
28475997711,43cyclictest16184-21apt-get20:05:161
28470997715,45cyclictest0-21swapper/022:05:160
2847599767,46cyclictest32661-21apt-get23:50:161
28475996651,8cyclictest26-21ksoftirqd/119:30:171
28475996434,18cyclictest26-21ksoftirqd/122:25:381
28475996316,28cyclictest0-21swapper/122:35:141
2847599615,13cyclictest0-21swapper/119:40:441
28475996132,8cyclictest26-21ksoftirqd/120:15:351
28475996110,33cyclictest14216-21apt-get23:00:141
28475995942,10cyclictest26-21ksoftirqd/119:55:001
28475995942,10cyclictest26-21ksoftirqd/100:25:421
28475995942,10cyclictest26-21ksoftirqd/100:25:001
28475995941,12cyclictest0-21swapper/100:31:501
28475995936,15cyclictest24392-21apt-get22:00:251
28475995841,10cyclictest26-21ksoftirqd/123:40:011
28475995841,10cyclictest26-21ksoftirqd/123:34:591
28475995841,10cyclictest26-21ksoftirqd/122:55:001
28475995841,10cyclictest26-21ksoftirqd/121:05:321
28475995841,10cyclictest26-21ksoftirqd/120:45:001
28475995841,10cyclictest26-21ksoftirqd/119:50:011
28475995840,11cyclictest26-21ksoftirqd/119:25:011
28475995840,10cyclictest26-21ksoftirqd/121:15:291
28475995839,12cyclictest0-21swapper/100:00:291
28475995839,11cyclictest0-21swapper/120:10:211
28475995839,11cyclictest0-21swapper/120:10:211
28475995838,12cyclictest26-21ksoftirqd/100:05:391
28475995838,11cyclictest26-21ksoftirqd/122:10:321
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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