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2025-11-13 - 10:51
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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
Characteristics of the 50 highest latencies:
System rackcslot6.osadl.org (updated Thu Nov 13, 2025 00:46:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
22943702920,0sleep50-21swapper/521:40:235
2178149998917,38cyclictest0-21swapper/623:38:136
2178143998917,41cyclictest0-21swapper/500:23:135
2178143998917,41cyclictest0-21swapper/500:23:135
2178127998917,37cyclictest0-21swapper/323:48:123
2178149998614,41cyclictest56-21ksoftirqd/622:28:136
217773828646,34sleep60-21swapper/619:07:256
23158632850,0sleep40-21swapper/421:58:314
2178149998416,36cyclictest0-21swapper/622:48:126
2178143998416,38cyclictest0-21swapper/519:58:125
2178149998317,34cyclictest0-21swapper/621:28:126
2178149998314,36cyclictest0-21swapper/621:53:136
2178143998319,35cyclictest0-21swapper/519:33:125
217771428242,13sleep10-21swapper/119:07:041
2178143998115,35cyclictest0-21swapper/520:23:115
2178149998014,36cyclictest0-21swapper/622:03:136
24226962790,0sleep70-21swapper/723:24:147
21867572790,0sleep70-21swapper/719:20:167
2178143997817,37cyclictest0-21swapper/521:18:125
2178102997614,34cyclictest0-21swapper/020:08:120
24026562740,0sleep10-21swapper/123:07:261
2178102997416,38cyclictest0-21swapper/021:08:120
217788027448,13sleep00-21swapper/019:09:280
25139472730,0sleep50-21swapper/500:35:255
217776327246,13sleep20-21swapper/219:07:452
23518772710,0sleep00-21swapper/022:26:240
217785827043,13sleep50-21swapper/519:09:085
217481327043,13sleep70-21swapper/719:05:017
2178149996814,35cyclictest0-21swapper/622:18:136
217783926848,14sleep40-21swapper/419:08:524
217760526843,12sleep30-21swapper/319:05:373
2178143994416,17cyclictest0-21swapper/519:13:125
217815699416,9cyclictest0-21swapper/720:53:127
2178135994113,16cyclictest2465721-21ssh23:58:134
2178127993511,24cyclictest0-21swapper/300:17:593
2178109993511,0cyclictest0-21swapper/122:22:591
2178149993410,24cyclictest0-21swapper/621:59:596
2178143993411,0cyclictest0-21swapper/523:23:585
2178127993411,0cyclictest0-21swapper/322:44:583
2178127993410,24cyclictest0-21swapper/321:55:593
217813599339,24cyclictest0-21swapper/421:12:594
217810999339,24cyclictest0-21swapper/122:43:591
2178156993216,3cyclictest0-21swapper/719:48:127
217814399329,0cyclictest0-21swapper/521:13:595
23801912300,1sleep121-21ksoftirqd/122:50:121
2178149993014,15cyclictest0-21swapper/623:08:136
217811999307,0cyclictest0-21swapper/200:21:592
217811999307,0cyclictest0-21swapper/200:21:582
2178156992913,15cyclictest0-21swapper/721:43:137
217814399295,24cyclictest0-21swapper/522:54:595
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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