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2025-09-18 - 19:40
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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 Thu Sep 18, 2025 12:44:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9495999857,23cyclictest26-21ksoftirqd/110:35:131
778329137,38sleep00-21swapper/007:05:160
9495999052,21cyclictest26-21ksoftirqd/109:05:151
9495998150,18cyclictest26-21ksoftirqd/111:55:161
774128032,35sleep10-21swapper/107:05:141
9489997655,10cyclictest14-21ksoftirqd/008:30:120
9489997625,44cyclictest6595-21aten2.4-expect10:00:170
9495997453,13cyclictest26-21ksoftirqd/107:20:121
949599742,56cyclictest23150-21needreboot09:15:331
9489997246,15cyclictest14-21ksoftirqd/009:30:160
9489997145,15cyclictest14-21ksoftirqd/011:20:150
9489997143,19cyclictest14-21ksoftirqd/008:45:150
9489997140,18cyclictest0-21swapper/009:55:140
9489997042,19cyclictest14-21ksoftirqd/008:15:240
9489997042,15cyclictest14-21ksoftirqd/010:20:190
9489996943,17cyclictest14-21ksoftirqd/011:30:120
9489996942,17cyclictest14-21ksoftirqd/012:10:130
9489996941,17cyclictest14-21ksoftirqd/008:10:140
9489996842,15cyclictest14-21ksoftirqd/009:45:210
9489996841,22cyclictest14-21ksoftirqd/012:30:140
9489996840,21cyclictest14-21ksoftirqd/010:30:130
9489996839,22cyclictest14-21ksoftirqd/011:45:130
9489996639,21cyclictest14-21ksoftirqd/011:00:130
9489996639,20cyclictest14-21ksoftirqd/010:35:130
9489996639,17cyclictest14-21ksoftirqd/007:50:120
9489996637,16cyclictest0-21swapper/008:20:250
9489996636,21cyclictest14-21ksoftirqd/010:50:020
9489996537,18cyclictest553-21runrttasks08:05:130
9489996536,16cyclictest0-21swapper/009:10:120
241512650,6sleep124148-21awk10:50:011
9489996440,14cyclictest14-21ksoftirqd/011:15:150
9489996438,21cyclictest14-21ksoftirqd/010:10:320
948999643,35cyclictest254-21systemd-journal11:58:400
9489996333,23cyclictest14-21ksoftirqd/007:15:110
9495996214,42cyclictest0-21swapper/110:20:301
9489996242,13cyclictest13590-21apt-get07:20:130
9489996237,18cyclictest9482-21cyclictest12:25:130
9489996234,21cyclictest14-21ksoftirqd/011:25:190
9489996232,20cyclictest14-21ksoftirqd/012:35:220
9489996231,17cyclictest0-21swapper/008:50:250
9489996138,17cyclictest14-21ksoftirqd/007:40:200
9489996134,22cyclictest14-21ksoftirqd/009:00:120
9489996134,22cyclictest14-21ksoftirqd/007:45:260
948999613,23cyclictest16205-21ntp_kernel_pll_08:55:280
9489996132,20cyclictest14-21ksoftirqd/008:35:140
9489996132,16cyclictest0-21swapper/012:15:210
9489996131,16cyclictest0-21swapper/010:25:130
9495996030,25cyclictest26-21ksoftirqd/112:32:221
9489996037,18cyclictest14-21ksoftirqd/010:58:490
9489996035,16cyclictest14-21ksoftirqd/010:15:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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