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2026-04-20 - 11:34
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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 50 highest latencies:
System rack3slot6.osadl.org (updated Mon Apr 20, 2026 00:45:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
296869911281,19cyclictest14-21ksoftirqd/023:20:260
296869910979,18cyclictest14-21ksoftirqd/023:05:150
296919910613,72cyclictest0-21swapper/123:35:131
296869910677,19cyclictest14-21ksoftirqd/022:00:240
296869910576,18cyclictest14-21ksoftirqd/019:30:120
296919910417,67cyclictest0-21swapper/120:55:141
296919910416,68cyclictest0-21swapper/121:25:151
296919910353,30cyclictest26-21ksoftirqd/121:45:141
296919910312,71cyclictest0-21swapper/123:25:121
296919910213,71cyclictest0-21swapper/121:55:141
296919910213,67cyclictest0-21swapper/123:45:151
296919910014,67cyclictest0-21swapper/121:50:141
296919910011,22cyclictest0-21swapper/120:50:151
29691999912,22cyclictest0-21swapper/123:55:141
29691999911,22cyclictest0-21swapper/122:15:141
29691999845,29cyclictest26-21ksoftirqd/122:35:131
29691999813,64cyclictest0-21swapper/120:25:251
29691999812,23cyclictest0-21swapper/122:10:221
29691999812,23cyclictest0-21swapper/122:10:221
29691999812,21cyclictest0-21swapper/122:30:151
29691999812,21cyclictest0-21swapper/121:20:141
29691999812,21cyclictest0-21swapper/120:20:161
29691999811,21cyclictest0-21swapper/119:15:131
29686999865,21cyclictest14-21ksoftirqd/023:45:120
29686999812,72cyclictest0-21swapper/000:00:170
29691999711,21cyclictest0-21swapper/122:20:161
29691999710,23cyclictest0-21swapper/123:30:121
29691999612,63cyclictest0-21swapper/100:25:161
29691999611,24cyclictest0-21swapper/121:40:141
29691999611,23cyclictest0-21swapper/123:15:131
29691999611,22cyclictest0-21swapper/120:15:161
29691999611,21cyclictest0-21swapper/120:40:151
29686999614,71cyclictest0-21swapper/021:25:130
29691999511,22cyclictest0-21swapper/119:25:161
29691999511,21cyclictest0-21swapper/120:05:251
29691999510,23cyclictest0-21swapper/122:05:141
29686999563,19cyclictest14-21ksoftirqd/021:15:120
29686999511,72cyclictest0-21swapper/019:55:140
29686999412,27cyclictest0-21swapper/000:10:130
29691999313,22cyclictest0-21swapper/122:40:131
29691999312,21cyclictest0-21swapper/123:20:261
29686999370,17cyclictest14-21ksoftirqd/021:35:120
29686999356,24cyclictest14-21ksoftirqd/000:25:180
29691999212,20cyclictest0-21swapper/122:55:141
29686999256,29cyclictest14-21ksoftirqd/020:10:130
2898329231,48sleep00-21swapper/019:05:300
2969199919,23cyclictest0-21swapper/119:20:141
2969199919,23cyclictest0-21swapper/119:20:141
29691999110,24cyclictest0-21swapper/122:25:151
29686999160,20cyclictest14-21ksoftirqd/023:50:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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