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2026-04-29 - 07:52
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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 Wed Apr 29, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
205182205172,21sleep20-21swapper/219:07:482
138591205171,22phc2sys0-21swapper/319:06:553
205462202169,21sleep00-21swapper/019:08:100
203412201168,22sleep10-21swapper/119:05:301
107621500,6sleep12098099cyclictest22:45:141
1450121450,6sleep02097999cyclictest22:05:240
20981999137,10cyclictest33-21ksoftirqd/219:20:302
1385918463,12phc2sys0-21swapper/319:10:003
20981997537,4cyclictest33-21ksoftirqd/219:20:012
20981997136,2cyclictest33-21ksoftirqd/222:55:132
138491710,1ptp4l401ktimersoftd/320:47:433
20981996231,4cyclictest33-21ksoftirqd/220:39:592
20981996228,4cyclictest33-21ksoftirqd/200:40:002
20981996131,4cyclictest33-21ksoftirqd/219:30:262
138491600,1ptp4l401ktimersoftd/322:27:403
20981995930,5cyclictest33-21ksoftirqd/223:40:242
138491580,1ptp4l401ktimersoftd/322:48:463
20981995731,7cyclictest33-21ksoftirqd/200:00:272
20981995729,7cyclictest33-21ksoftirqd/221:30:012
20981995726,5cyclictest33-21ksoftirqd/200:15:192
20981995620,8cyclictest33-21ksoftirqd/221:40:002
20981995530,6cyclictest33-21ksoftirqd/219:40:152
20981995526,7cyclictest33-21ksoftirqd/223:30:002
20981995525,4cyclictest33-21ksoftirqd/223:15:262
20981995525,4cyclictest33-21ksoftirqd/221:45:222
20981995522,9cyclictest33-21ksoftirqd/220:50:002
20981995522,3cyclictest33-21ksoftirqd/222:10:172
20981995518,6cyclictest33-21ksoftirqd/219:10:272
20981995518,10cyclictest33-21ksoftirqd/221:20:002
20981995429,7cyclictest33-21ksoftirqd/223:10:192
20981995421,5cyclictest33-21ksoftirqd/220:55:172
20981995421,4cyclictest33-21ksoftirqd/219:40:002
20981995418,10cyclictest33-21ksoftirqd/221:14:592
20981995414,6cyclictest33-21ksoftirqd/200:05:142
238992530,1sleep10-21swapper/123:30:181
2098199537,3cyclictest33-21ksoftirqd/219:51:332
20981995329,7cyclictest33-21ksoftirqd/220:15:012
20981995327,7cyclictest33-21ksoftirqd/220:05:232
20981995320,4cyclictest33-21ksoftirqd/200:15:012
20981995317,4cyclictest33-21ksoftirqd/220:19:592
20981995317,4cyclictest33-21ksoftirqd/220:19:592
20981995314,6cyclictest33-21ksoftirqd/222:50:142
20981995226,7cyclictest33-21ksoftirqd/220:55:012
20981995222,4cyclictest33-21ksoftirqd/220:40:192
20981995215,6cyclictest33-21ksoftirqd/222:20:132
20981995127,6cyclictest33-21ksoftirqd/221:35:002
20981995122,4cyclictest33-21ksoftirqd/220:00:162
20981995118,4cyclictest33-21ksoftirqd/221:25:012
20981995115,6cyclictest33-21ksoftirqd/221:55:172
20981995022,7cyclictest33-21ksoftirqd/223:45:272
20981995019,4cyclictest33-21ksoftirqd/220:25:012
2098199492,3cyclictest33-21ksoftirqd/200:30:252
20981994923,7cyclictest33-21ksoftirqd/222:45:182
20981994921,3cyclictest33-21ksoftirqd/223:03:472
20981994920,6cyclictest33-21ksoftirqd/223:05:262
20981994920,3cyclictest33-21ksoftirqd/219:30:002
20981994919,4cyclictest33-21ksoftirqd/219:55:132
20981994916,3cyclictest33-21ksoftirqd/222:00:212
20981994915,4cyclictest33-21ksoftirqd/223:30:132
254972480,2sleep20-21swapper/223:35:002
20981994825,6cyclictest33-21ksoftirqd/223:25:002
20981994822,8cyclictest33-21ksoftirqd/222:35:002
20981994820,4cyclictest33-21ksoftirqd/222:25:132
20981994818,10cyclictest33-21ksoftirqd/200:25:002
20981994817,6cyclictest33-21ksoftirqd/222:05:282
20981994817,10cyclictest33-21ksoftirqd/219:45:182
20981994738,3cyclictest33-21ksoftirqd/221:50:212
2098199473,3cyclictest33-21ksoftirqd/221:05:252
20981994722,6cyclictest33-21ksoftirqd/220:30:192
20981994620,8cyclictest33-21ksoftirqd/222:15:182
138491450,0ptp4l401ktimersoftd/319:56:213
2098199442,3cyclictest33-21ksoftirqd/200:25:172
20981994417,3cyclictest33-21ksoftirqd/221:44:162
20981994415,6cyclictest33-21ksoftirqd/222:35:262
2098199440,2cyclictest121rcu_preempt20:30:012
138491440,0ptp4l401ktimersoftd/322:57:073
20981994313,7cyclictest33-21ksoftirqd/223:50:192
138491430,0ptp4l401ktimersoftd/323:25:213
138491430,0ptp4l401ktimersoftd/319:52:433
20980994236,4cyclictest12583-21cron21:00:001
138491420,0ptp4l401ktimersoftd/322:10:253
138491420,0ptp4l401ktimersoftd/321:57:473
20981994114,8cyclictest33-21ksoftirqd/221:00:142
135191410,1getstats0-21swapper/321:01:373
50798400,4rtkit-daemon15461-21cron00:20:001
20982994034,3cyclictest2203-21cron19:35:003
20981994034,3cyclictest33-21ksoftirqd/222:45:002
20980994035,3cyclictest25-21ksoftirqd/119:20:211
138491400,0ptp4l401ktimersoftd/300:10:013
20982993832,3cyclictest41-21ksoftirqd/323:55:113
20979993831,4cyclictest9-21ksoftirqd/019:20:220
50798370,3rtkit-daemon31071-21iostat_ios21:35:181
20982993732,3cyclictest41-21ksoftirqd/320:30:003
20981993731,3cyclictest33-21ksoftirqd/223:55:142
20980993731,4cyclictest25-21ksoftirqd/122:19:451
20980993714,20cyclictest28387-21cut22:35:121
20980993713,21cyclictest30653-21iostat19:25:191
50798360,2rtkit-daemon0-21swapper/022:35:250
20982993630,4cyclictest41-21ksoftirqd/323:48:303
20982993630,4cyclictest41-21ksoftirqd/319:20:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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