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2026-09-24 - 18:54
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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 100 highest latencies:
System rackdslot4.osadl.org (updated Thu Sep 24, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591206170,24phc2sys0-21swapper/307:06:203
198892201168,22sleep20-21swapper/207:05:052
198882201168,22sleep10-21swapper/107:05:031
198922200167,22sleep00-21swapper/007:05:060
84721520,5sleep02240499cyclictest07:30:180
22407996616,9cyclictest41-21ksoftirqd/312:05:003
22407996616,9cyclictest41-21ksoftirqd/312:05:003
22405996023,5cyclictest25-21ksoftirqd/112:05:211
22405995918,8cyclictest25-21ksoftirqd/107:50:221
2211225936,15sleep30-21swapper/307:10:003
22407995719,10cyclictest41-21ksoftirqd/307:25:143
22406995724,7cyclictest33-21ksoftirqd/207:25:002
22405995724,4cyclictest25-21ksoftirqd/107:10:141
22405995723,4cyclictest25-21ksoftirqd/109:10:241
22405995722,4cyclictest25-21ksoftirqd/107:35:141
22405995721,4cyclictest25-21ksoftirqd/109:30:141
22405995721,3cyclictest25-21ksoftirqd/112:20:211
22405995721,3cyclictest25-21ksoftirqd/109:55:271
22405995720,6cyclictest25-21ksoftirqd/111:55:151
138491570,1ptp4l401ktimersoftd/309:10:003
22405995623,7cyclictest25-21ksoftirqd/111:40:001
22405995623,6cyclictest25-21ksoftirqd/111:30:201
22405995622,4cyclictest25-21ksoftirqd/112:15:221
22405995621,7cyclictest25-21ksoftirqd/110:15:221
22405995621,4cyclictest25-21ksoftirqd/111:00:261
22405995619,7cyclictest25-21ksoftirqd/110:20:131
22405995618,8cyclictest25-21ksoftirqd/109:15:201
22405995616,7cyclictest25-21ksoftirqd/109:45:171
138491560,1ptp4l401ktimersoftd/309:30:263
2240799554,9cyclictest41-21ksoftirqd/309:10:173
22407995520,10cyclictest41-21ksoftirqd/307:15:123
22407995520,10cyclictest41-21ksoftirqd/307:15:123
22405995529,7cyclictest25-21ksoftirqd/112:00:261
22405995529,7cyclictest25-21ksoftirqd/112:00:261
22405995528,7cyclictest25-21ksoftirqd/112:10:201
22405995526,7cyclictest25-21ksoftirqd/111:55:001
22405995525,7cyclictest25-21ksoftirqd/109:40:281
22405995525,6cyclictest25-21ksoftirqd/109:05:151
22405995523,7cyclictest25-21ksoftirqd/109:50:111
22405995522,7cyclictest25-21ksoftirqd/108:25:141
22405995522,4cyclictest25-21ksoftirqd/110:35:241
22405995520,4cyclictest25-21ksoftirqd/108:45:251
22405995516,8cyclictest25-21ksoftirqd/108:00:141
22405995515,8cyclictest25-21ksoftirqd/111:05:151
22405995514,8cyclictest25-21ksoftirqd/110:25:231
22405995514,7cyclictest25-21ksoftirqd/108:55:211
22407995412,11cyclictest41-21ksoftirqd/311:20:123
22405995426,8cyclictest25-21ksoftirqd/110:41:141
22405995425,6cyclictest25-21ksoftirqd/110:00:131
22405995425,4cyclictest25-21ksoftirqd/111:40:221
22405995423,8cyclictest25-21ksoftirqd/110:09:091
22405995418,8cyclictest25-21ksoftirqd/107:25:141
22405995416,7cyclictest25-21ksoftirqd/109:25:241
22405995415,8cyclictest25-21ksoftirqd/108:20:201
22405995323,7cyclictest25-21ksoftirqd/110:31:031
22405995322,4cyclictest25-21ksoftirqd/112:25:111
22405995319,6cyclictest25-21ksoftirqd/111:15:101
22405995319,4cyclictest25-21ksoftirqd/108:20:011
22405995318,7cyclictest25-21ksoftirqd/112:30:211
22405995318,7cyclictest25-21ksoftirqd/112:30:211
22405995316,7cyclictest25-21ksoftirqd/111:20:211
22405995316,6cyclictest25-21ksoftirqd/109:20:241
22405995315,6cyclictest25-21ksoftirqd/107:40:111
22405995314,8cyclictest25-21ksoftirqd/108:50:211
22405995226,3cyclictest25-21ksoftirqd/110:55:271
22405995224,3cyclictest25-21ksoftirqd/109:00:281
22405995223,8cyclictest25-21ksoftirqd/110:10:311
22405995223,8cyclictest25-21ksoftirqd/108:32:321
22405995223,6cyclictest25-21ksoftirqd/110:53:421
22405995221,3cyclictest25-21ksoftirqd/107:20:141
22405995220,7cyclictest25-21ksoftirqd/108:35:141
22405995220,3cyclictest25-21ksoftirqd/108:10:141
325212510,2sleep20-21swapper/208:35:152
22407995124,9cyclictest41-21ksoftirqd/308:10:003
22407995122,11cyclictest41-21ksoftirqd/311:20:003
22407995114,12cyclictest41-21ksoftirqd/310:55:003
22406995111,11cyclictest33-21ksoftirqd/211:35:132
2240599514,3cyclictest25-21ksoftirqd/107:15:131
2240599514,3cyclictest25-21ksoftirqd/107:15:131
138491510,0ptp4l401ktimersoftd/309:00:163
138491510,0ptp4l401ktimersoftd/308:23:013
22407995019,7cyclictest41-21ksoftirqd/307:40:243
22406995019,3cyclictest33-21ksoftirqd/210:10:192
2240599504,4cyclictest25-21ksoftirqd/111:10:261
2240799498,9cyclictest41-21ksoftirqd/311:40:123
22407994920,4cyclictest41-21ksoftirqd/308:35:263
2240699499,5cyclictest33-21ksoftirqd/209:45:182
2240699497,13cyclictest33-21ksoftirqd/212:00:252
2240699497,13cyclictest33-21ksoftirqd/212:00:252
22406994931,9cyclictest33-21ksoftirqd/210:30:002
22406994922,8cyclictest33-21ksoftirqd/210:40:002
2240599493,3cyclictest25-21ksoftirqd/111:45:141
22405994916,8cyclictest25-21ksoftirqd/107:30:141
22405994915,7cyclictest25-21ksoftirqd/112:35:211
22405994914,3cyclictest25-21ksoftirqd/107:45:111
2240799485,4cyclictest41-21ksoftirqd/309:45:193
2240699486,4cyclictest33-21ksoftirqd/211:10:212
22406994816,10cyclictest33-21ksoftirqd/212:35:002
22406994816,10cyclictest33-21ksoftirqd/212:35:002
2240599483,3cyclictest25-21ksoftirqd/108:40:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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