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2025-11-14 - 05:26
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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 rackbslot1.osadl.org (updated Thu Nov 13, 2025 12:44:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39850882213190,13sleep20-21swapper/207:09:562
39850002205181,14sleep00-21swapper/007:08:450
39850392202178,15sleep30-21swapper/307:09:163
39849082192163,19sleep10-21swapper/107:07:341
408533221470,1sleep0247563-13Compositor08:45:110
3993321420,2sleep239941-21idleruntime-cro11:10:002
3985288996559,5cyclictest81214-21/usr/share/muni11:50:011
3985291996360,3cyclictest4114920-21kworker/u8:2+events_unbound10:17:022
3985288996258,3cyclictest19541-21kworker/u8:4+events_unbound11:05:091
3985283996259,2cyclictest19541-21kworker/u8:4+flush-179:011:55:210
3985294996158,2cyclictest65141-21kworker/u8:5+flush-179:011:50:353
3985294996157,3cyclictest4006506-21kworker/u8:0+events_unbound09:10:213
3985288996157,3cyclictest3979778-21kworker/u8:4+flush-179:007:45:011
3985288996152,4cyclictest19541-21kworker/u8:4+events_unbound11:00:351
3985283996157,3cyclictest4124997-21kworker/u8:1+flush-179:010:25:100
3985294996056,3cyclictest4099430-21kworker/u8:6+flush-179:009:17:013
3985294996056,3cyclictest4099430-21kworker/u8:6+flush-179:009:17:013
3985283996055,4cyclictest4114920-21kworker/u8:2+flush-179:009:45:020
3985283996055,4cyclictest4114920-21kworker/u8:2+flush-179:009:45:010
3985294995956,2cyclictest24644-21kworker/u8:2+events_unbound11:15:303
3985294995952,2cyclictest4006506-21kworker/u8:0+events_unbound08:23:123
3985294995944,12cyclictest75926-21apache_processe11:45:013
3985288995955,3cyclictest65141-21kworker/u8:5+flush-179:011:55:311
3985288995942,14cyclictest75915-21chrome11:45:011
3985283995955,3cyclictest4165788-21kworker/u8:4+flush-179:010:01:220
3985283995852,5cyclictest247516-21Chrome_ChildIOT09:30:340
3985283995852,5cyclictest247516-21Chrome_ChildIOT09:30:340
3985294995753,3cyclictest44719-21kworker/u8:0+flush-179:011:55:113
3985291995752,4cyclictest3125724-21ThreadPoolForeg07:45:012
3985288995754,2cyclictest3979776-21kworker/u8:3+events_unbound07:39:031
3985283995754,2cyclictest4124997-21kworker/u8:1+flush-179:010:05:140
3985283995753,3cyclictest4099430-21kworker/u8:6+events_unbound09:35:130
3985294995652,3cyclictest24644-21kworker/u8:2+flush-179:011:20:343
3985288995646,9cyclictest3893708-21kworker/u8:2+events_unbound07:10:301
3985294995552,2cyclictest4182474-21kworker/u8:3+events_unbound10:35:133
3985294995551,3cyclictest4124997-21kworker/u8:1+flush-179:010:01:163
3985294995551,3cyclictest24644-21kworker/u8:2+flush-179:010:55:203
3985294995550,4cyclictest4089655-21latency_hist08:50:013
3985294995549,5cyclictest247516-21Chrome_ChildIOT09:55:293
3985288995547,4cyclictest4114920-21kworker/u8:2+events_unbound09:55:301
3985288995547,3cyclictest4124997-21kworker/u8:1+flush-179:010:10:221
3985283995552,2cyclictest4042518-21kworker/u8:1+flush-179:008:05:210
3985283995552,2cyclictest4006506-21kworker/u8:0+events_unbound08:55:100
3985283995548,3cyclictest4114920-21kworker/u8:2+flush-179:010:10:330
3985294995450,3cyclictest4006506-21kworker/u8:0+events_unbound08:55:303
3985294995447,3cyclictest3893708-21kworker/u8:2+flush-179:007:20:103
3985294995443,11cyclictest4124997-21kworker/u8:1+flush-179:010:40:123
3985288995450,3cyclictest4006506-21kworker/u8:0+events_unbound09:05:141
3985283995447,3cyclictest4114920-21kworker/u8:2+flush-179:009:45:280
3985294995350,2cyclictest4078637-21kworker/u8:3+events_unbound08:40:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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