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2026-04-24 - 16:04
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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 Fri Apr 24, 2026 12:44:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4241999653,38cyclictest26-21ksoftirqd/111:55:141
378329416,32sleep10-21swapper/107:07:151
4241998330,9cyclictest26-21ksoftirqd/112:15:261
4241998260,10cyclictest26-21ksoftirqd/108:35:221
424099803,49cyclictest27124-21ntp_states11:10:280
4241997650,15cyclictest26-21ksoftirqd/109:30:231
405327616,51sleep00-21swapper/007:09:360
4241997546,19cyclictest26-21ksoftirqd/110:55:131
154982740,19sleep0171rcuc/009:10:020
4240997340,27cyclictest10344-21telnet10:25:250
4241997237,9cyclictest26-21ksoftirqd/109:15:221
4241997235,31cyclictest26-21ksoftirqd/109:50:001
4241997043,21cyclictest26-21ksoftirqd/110:05:111
4240997032,16cyclictest14-21ksoftirqd/011:27:370
70472690,6sleep10-21swapper/110:15:241
424199699,54cyclictest36-21kcompactd009:20:121
424199699,54cyclictest36-21kcompactd009:20:121
4241996941,18cyclictest26-21ksoftirqd/107:50:231
4241996927,37cyclictest26-21ksoftirqd/111:50:261
4240996935,28cyclictest1014-21telnet11:30:150
4241996840,19cyclictest26-21ksoftirqd/108:05:241
4241996840,19cyclictest26-21ksoftirqd/107:10:111
4241996838,18cyclictest0-21swapper/110:20:131
4241996826,37cyclictest26-21ksoftirqd/110:35:341
4241996740,19cyclictest562-21runrttasks08:30:101
4241996737,20cyclictest24565-21taskset09:35:131
4241996725,36cyclictest26-21ksoftirqd/112:10:351
4240996737,17cyclictest14-21ksoftirqd/009:30:200
4240996731,30cyclictest14-21ksoftirqd/012:15:300
4240996731,29cyclictest14-21ksoftirqd/009:55:030
4240996725,38cyclictest14-21ksoftirqd/008:19:560
4240996717,20cyclictest14-21ksoftirqd/007:50:090
4241996638,17cyclictest0-21swapper/112:30:131
4241996637,20cyclictest26-21ksoftirqd/111:15:121
4241996636,19cyclictest26-21ksoftirqd/110:10:111
424099666,19cyclictest9722-21apt-get11:55:130
4240996632,28cyclictest14-21ksoftirqd/008:05:110
4240996631,8cyclictest14-21ksoftirqd/007:55:340
424099663,15cyclictest23331-21seq08:00:250
4240996623,30cyclictest14-21ksoftirqd/011:15:210
4240996619,20cyclictest14-21ksoftirqd/007:25:120
424199657,14cyclictest26-21ksoftirqd/108:30:001
4241996539,18cyclictest0-21swapper/109:25:151
4241996533,18cyclictest0-21swapper/111:25:141
4241996516,18cyclictest0-21swapper/108:10:111
4240996538,19cyclictest7982-21apt-get11:50:120
4240996530,29cyclictest14-21ksoftirqd/012:25:250
424199645,12cyclictest26-21ksoftirqd/109:00:001
4241996440,14cyclictest0-21swapper/110:00:111
4241996423,37cyclictest26-21ksoftirqd/111:45:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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