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2026-03-15 - 03:31
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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 rack0slot2.osadl.org (updated Sun Mar 15, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1700622980,0sleep40-21swapper/423:09:134
41127122950,1sleep74112713-21cut21:24:097
382626125848,7sleep40-21swapper/419:01:124
3826746995451,2cyclictest152685-21kworker/u16:1+events_unbound23:44:035
3826746994947,2cyclictest80992-21kworker/u16:3+events_unbound22:34:115
3826746994947,2cyclictest80992-21kworker/u16:3+events_unbound22:34:115
3826746994947,2cyclictest4177561-21kworker/u16:1+events_unbound22:09:185
3826746994947,2cyclictest4095365-21kworker/u16:0+flush-8:021:33:485
3826748994845,2cyclictest3916363-21kworker/u16:3+flush-8:020:48:496
382618224838,7sleep60-21swapper/619:00:106
3826746994744,2cyclictest3856201-21kworker/u16:1+events_unbound20:34:025
3826746994744,2cyclictest3856201-21kworker/u16:1+events_unbound20:34:025
3826746994543,2cyclictest311456-21kworker/u16:2+flush-8:000:29:225
3826746994442,2cyclictest81100-21kworker/u16:5+flush-8:023:29:185
3826746994442,2cyclictest126837-21kworker/u16:2+events_unbound23:19:025
3826751994338,4cyclictest4071424-21latency_hist21:08:487
3826751994337,5cyclictest3964109-21latency_hist20:13:497
382675199430,41cyclictest650-21systemd-journal21:48:487
3826748994239,2cyclictest3856201-21kworker/u16:1+flush-8:021:14:026
3826746994240,2cyclictest81100-21kworker/u16:5+events_unbound23:14:155
3826746994240,2cyclictest4060016-21kworker/u16:4+events_unbound21:16:205
3826746994240,2cyclictest152685-21kworker/u16:1+events_unbound23:59:105
3826746994240,1cyclictest4177561-21kworker/u16:1+events_unbound22:24:035
3826746994139,2cyclictest81100-21kworker/u16:5+events_unbound23:24:155
382620124130,8sleep50-21swapper/519:00:255
3826748994036,3cyclictest279877-21kworker/u16:4+flush-8:023:54:176
3826746994038,2cyclictest126837-21kworker/u16:2+flush-8:022:59:185
3826746993937,2cyclictest4095365-21kworker/u16:0+events_unbound22:00:115
38173502393,31sleep70-21swapper/718:58:587
3826746993837,1cyclictest3856201-21kworker/u16:1+events_unbound21:36:555
3826746993836,2cyclictest4177561-21kworker/u16:1+flush-8:022:29:045
3826746993836,2cyclictest152685-21kworker/u16:1+events_unbound23:40:465
3826748993734,2cyclictest3807493-21kworker/u16:0+flush-8:019:49:146
3826746993735,2cyclictest81100-21kworker/u16:5+flush-8:023:34:235
3826746993735,2cyclictest4095365-21kworker/u16:0+events_unbound21:46:035
3826746993735,2cyclictest271634-21kworker/u16:0+events_unbound23:57:345
3826746993735,2cyclictest247459-21kworker/u16:3+events_unbound00:19:235
3826746993735,2cyclictest126837-21kworker/u16:2+events_unbound22:51:195
3826748993634,2cyclictest4080239-21kworker/u16:5+flush-8:021:33:446
3826746993634,2cyclictest271634-21kworker/u16:0+events_unbound00:13:105
3826746993634,2cyclictest247459-21kworker/u16:3+events_unbound00:26:475
3826746993533,2cyclictest81100-21kworker/u16:5+events_unbound22:39:105
3826746993533,2cyclictest4177561-21kworker/u16:1+events_unbound22:45:395
3826746993533,2cyclictest4177561-21kworker/u16:1+events_unbound22:15:595
3826746993533,2cyclictest4095365-21kworker/u16:0+events_unbound21:27:115
3826746993533,2cyclictest271634-21kworker/u16:0+events_unbound00:18:465
3826746993433,1cyclictest4140532-21kworker/u16:2+events_unbound21:43:075
3826746993432,2cyclictest4095365-21kworker/u16:0+events_unbound21:52:595
3826746993432,2cyclictest4080239-21kworker/u16:5+events_unbound21:10:485
3826746993432,2cyclictest4080239-21kworker/u16:5+events_unbound21:10:485
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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