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2026-04-20 - 13:32
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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 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
29686999160,20cyclictest14-21ksoftirqd/000:05:140
29686999159,19cyclictest14-21ksoftirqd/022:45:130
2969199907,24cyclictest11648-21apt-get22:50:141
2969199907,24cyclictest11648-21apt-get22:50:141
29691999012,21cyclictest0-21swapper/120:30:161
29691999011,18cyclictest0-21swapper/123:40:131
29691999010,20cyclictest0-21swapper/121:00:171
29686999054,23cyclictest14-21ksoftirqd/020:55:130
29686998951,25cyclictest14-21ksoftirqd/022:25:140
2969199889,23cyclictest0-21swapper/119:35:111
2969199884,41cyclictest562-21runrttasks20:35:261
29691998812,22cyclictest0-21swapper/100:20:141
29691998811,66cyclictest0-21swapper/123:05:141
2969199877,55cyclictest8245-21diskmemload21:10:131
29691998720,56cyclictest0-21swapper/123:10:131
29691998711,55cyclictest0-21swapper/121:35:151
29686998748,26cyclictest14-21ksoftirqd/022:55:130
29691998613,62cyclictest0-21swapper/100:30:141
29691998612,22cyclictest0-21swapper/119:10:121
29691998510,21cyclictest0-21swapper/123:50:131
29686998553,20cyclictest14-21ksoftirqd/023:55:120
29686998553,19cyclictest0-21swapper/020:45:120
29686998552,23cyclictest14-21ksoftirqd/022:30:130
29686998443,28cyclictest14-21ksoftirqd/023:00:160
29691998312,20cyclictest0-21swapper/121:15:131
29691998310,23cyclictest0-21swapper/100:00:151
29686998344,27cyclictest14-21ksoftirqd/021:40:140
29686998314,59cyclictest0-21swapper/020:25:230
2968699828,58cyclictest16346-21taskset00:35:150
29686998245,27cyclictest14-21ksoftirqd/019:20:140
29686998245,27cyclictest14-21ksoftirqd/019:20:140
2969199818,20cyclictest19192-21apt-get20:10:131
2969199817,20cyclictest9360-21apt-get00:15:141
2968699819,58cyclictest562-21runrttasks23:15:120
2968699819,58cyclictest22427-21chrt21:50:120
29686998134,38cyclictest14-21ksoftirqd/022:10:240
29686998134,38cyclictest14-21ksoftirqd/022:10:240
2969199808,18cyclictest15361-21apt-get20:00:141
2969199807,23cyclictest13599-21apt-get19:55:161
29691998012,21cyclictest0-21swapper/123:00:141
2968699809,57cyclictest8245-21diskmemload21:10:140
2968699809,57cyclictest562-21runrttasks21:05:140
2968699809,57cyclictest562-21runrttasks21:05:140
29686998043,28cyclictest14-21ksoftirqd/022:05:110
29686998036,33cyclictest14-21ksoftirqd/019:40:120
29686998036,33cyclictest14-21ksoftirqd/019:40:120
29686998033,38cyclictest14-21ksoftirqd/023:25:140
29686998010,56cyclictest0-21swapper/023:10:130
2968699798,55cyclictest503-21snmpd22:40:160
29686997913,54cyclictest0-21swapper/022:15:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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