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2026-03-14 - 07:12
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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 Sat Mar 14, 2026 00:45:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
294339911113,30cyclictest0-21swapper/023:30:110
294399910877,18cyclictest26-21ksoftirqd/120:30:111
294399910755,42cyclictest0-21swapper/123:40:141
294339910511,30cyclictest0-21swapper/020:15:130
294399910261,28cyclictest26-21ksoftirqd/120:00:131
294399910059,28cyclictest26-21ksoftirqd/120:50:111
29439999960,26cyclictest26-21ksoftirqd/119:45:121
29439999950,36cyclictest26-21ksoftirqd/123:50:151
29439999754,32cyclictest26-21ksoftirqd/120:45:121
29439999751,33cyclictest26-21ksoftirqd/122:15:151
29439999748,36cyclictest26-21ksoftirqd/119:20:131
29439999747,36cyclictest26-21ksoftirqd/100:20:141
29439999654,31cyclictest26-21ksoftirqd/121:15:121
29439999411,68cyclictest0-21swapper/122:45:171
29439999245,35cyclictest26-21ksoftirqd/123:25:141
29439999244,36cyclictest26-21ksoftirqd/100:25:131
29439999243,30cyclictest26-21ksoftirqd/119:10:231
29439999212,65cyclictest0-21swapper/123:05:241
29439999042,34cyclictest26-21ksoftirqd/119:35:131
29439999012,63cyclictest0-21swapper/122:20:151
29439999012,62cyclictest0-21swapper/121:30:111
29439999012,61cyclictest0-21swapper/122:05:221
29439999012,61cyclictest0-21swapper/119:55:141
29439999012,59cyclictest0-21swapper/122:50:151
2943999899,63cyclictest500-21snmpd19:15:141
29439998911,63cyclictest0-21swapper/123:55:231
29439998911,63cyclictest0-21swapper/121:45:141
29439998911,63cyclictest0-21swapper/121:45:131
29439998843,30cyclictest26-21ksoftirqd/123:45:131
29439998841,33cyclictest26-21ksoftirqd/119:50:161
2896628825,16sleep10-21swapper/119:07:151
2943999877,59cyclictest7984-21diskmemload21:10:131
2943999877,59cyclictest7984-21diskmemload21:10:121
29439998742,30cyclictest26-21ksoftirqd/120:40:141
29439998711,58cyclictest0-21swapper/121:25:131
29439998710,60cyclictest0-21swapper/100:30:121
2943999867,62cyclictest548-21runrttasks20:20:111
29439998634,33cyclictest26-21ksoftirqd/119:25:121
29439998512,57cyclictest0-21swapper/121:20:141
29439998512,54cyclictest0-21swapper/122:35:151
2943999847,58cyclictest29498-21runrttasks22:10:121
2943999836,58cyclictest0-21swapper/120:35:101
29439998236,31cyclictest0-21swapper/123:15:111
2943999818,55cyclictest0-21swapper/122:00:101
29439998135,34cyclictest0-21swapper/121:00:241
29439998036,30cyclictest0-21swapper/123:00:101
29439998034,32cyclictest0-21swapper/122:25:141
29439998033,28cyclictest0-21swapper/123:20:101
2943999800,57cyclictest0-21swapper/120:05:101
29439997935,30cyclictest0-21swapper/100:10:121
29439997934,30cyclictest0-21swapper/100:35:131
29439997934,29cyclictest0-21swapper/122:55:131
29439997928,31cyclictest0-21swapper/122:30:121
29439997832,33cyclictest0-21swapper/121:05:091
29439997825,33cyclictest0-21swapper/120:25:121
29439997737,29cyclictest0-21swapper/123:35:121
29439997726,28cyclictest0-21swapper/121:35:121
29439997723,35cyclictest0-21swapper/121:50:111
29439997628,30cyclictest26-21ksoftirqd/122:40:131
29439997625,30cyclictest0-21swapper/100:05:111
2765827627,37sleep00-21swapper/019:05:110
29439997530,29cyclictest0-21swapper/100:00:221
29439997528,29cyclictest0-21swapper/123:30:121
29439997524,31cyclictest0-21swapper/121:55:141
29439997512,37cyclictest0-21swapper/121:40:111
29439997427,29cyclictest0-21swapper/120:55:131
29439997424,32cyclictest0-21swapper/120:15:141
29439997326,31cyclictest0-21swapper/100:15:091
29439997324,29cyclictest0-21swapper/123:10:111
29439997224,29cyclictest0-21swapper/120:10:141
29439997124,28cyclictest0-21swapper/119:30:111
2943399695,35cyclictest0-21swapper/021:41:030
29439996612,31cyclictest0-21swapper/119:40:211
29433996523,16cyclictest7697-21aten2.4-expect00:10:160
2943399645,44cyclictest0-21swapper/000:07:030
29433996443,14cyclictest11083-21apt-get22:50:130
29433996413,31cyclictest0-21swapper/023:15:110
29433996412,30cyclictest0-21swapper/019:50:160
29433996319,37cyclictest14-21ksoftirqd/023:50:210
29433996243,12cyclictest8721-21apt-get19:40:250
29433996236,20cyclictest14-21ksoftirqd/019:15:170
2943399623,22cyclictest11464-21munin-run21:20:000
29433996218,18cyclictest250-21systemd-journal20:45:340
2943399609,45cyclictest0-21swapper/019:20:280
2943399607,17cyclictest31233-21apt-get22:15:120
29433996042,10cyclictest14-21ksoftirqd/022:05:010
29433996041,13cyclictest4627-21apt-get21:00:160
29433996035,20cyclictest14-21ksoftirqd/022:25:520
2943399595,48cyclictest0-21swapper/000:35:180
29433995941,11cyclictest14-21ksoftirqd/021:45:240
29433995941,11cyclictest14-21ksoftirqd/021:45:240
29433995941,11cyclictest14-21ksoftirqd/019:10:140
29433995939,11cyclictest14-21ksoftirqd/021:55:000
29433995938,12cyclictest14-21ksoftirqd/000:00:020
29433995914,40cyclictest594-21aten2.4-expect22:20:150
2943399586,45cyclictest0-21swapper/020:40:280
29433995840,11cyclictest14-21ksoftirqd/023:10:010
29433995839,11cyclictest14-21ksoftirqd/022:35:320
29433995836,17cyclictest14-21ksoftirqd/021:25:210
2943399583,48cyclictest8074-21irqstats22:40:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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