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2026-04-07 - 01:29
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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 Tue Apr 07, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
403724225747,7sleep40-21swapper/419:01:354
402816525746,7sleep50-21swapper/518:57:195
4037579995650,5cyclictest521582-21latency_hist00:07:177
403724425141,7sleep60-21swapper/619:01:376
4037579994540,4cyclictest125072-21latency_hist21:22:177
40281762393,31sleep70-21swapper/718:57:297
4037579993833,4cyclictest389412-21latency_hist23:12:177
4037570993633,2cyclictest197744-21kworker/u16:3+events_unbound22:42:305
4037570993533,2cyclictest437749-21kworker/u16:3+flush-8:023:47:165
4037579993429,4cyclictest461410-21latency_hist23:42:167
4037579993429,4cyclictest461410-21latency_hist23:42:167
4037579993332,0cyclictest0-21swapper/723:32:307
4037574993331,2cyclictest77244-21kworker/u16:2+events_unbound22:06:016
4037566993331,2cyclictest340483-21kworker/u16:0+events_unbound23:37:344
4037566993331,2cyclictest340483-21kworker/u16:0+events_unbound23:37:344
4037579993229,2cyclictest124-21kswapd000:12:307
4037574993230,2cyclictest461600-21kworker/u16:4+flush-8:023:51:246
4037574993230,2cyclictest340483-21kworker/u16:0+events_unbound23:10:526
4037574993230,2cyclictest197744-21kworker/u16:3+flush-8:022:44:346
4037570993230,2cyclictest4037092-21kworker/u16:3+events_unbound19:07:225
4037570993229,2cyclictest77244-21kworker/u16:2+events_unbound22:12:305
4037566993229,2cyclictest461600-21kworker/u16:4+flush-8:000:02:224
4618652300,1chrt461866-21sh23:42:247
4037579993025,4cyclictest101104-21latency_hist21:12:177
4037574993028,2cyclictest3989139-21kworker/u16:1+events_unbound20:51:396
4037574992927,2cyclictest3989139-21kworker/u16:1+events_unbound20:41:436
4037574992927,2cyclictest3989139-21kworker/u16:1+events_unbound20:28:346
4037574992927,2cyclictest3989139-21kworker/u16:1+events_unbound19:30:026
4037574992927,2cyclictest124544-21kworker/u16:1+events_unbound21:41:416
4037574992927,2cyclictest124544-21kworker/u16:1+events_unbound21:41:416
4037570992927,2cyclictest461600-21kworker/u16:4+events_unbound00:02:475
4037566992925,3cyclictest437749-21kworker/u16:3+flush-8:023:32:364
4037579992827,0cyclictest0-21swapper/723:57:327
4037574992826,2cyclictest77244-21kworker/u16:2+events_unbound21:04:216
4037574992826,2cyclictest461600-21kworker/u16:4+events_unbound00:07:016
4037574992826,2cyclictest4022578-21kworker/u16:2+events_unbound20:35:386
4037574992826,2cyclictest3989139-21kworker/u16:1+events_unbound20:45:386
4037574992826,2cyclictest329828-21kworker/u16:4+events_unbound22:51:456
4037574992826,2cyclictest317781-21kworker/u16:1+flush-8:023:28:106
4037570992826,2cyclictest317781-21kworker/u16:1+flush-8:022:47:335
4037574992725,2cyclictest437749-21kworker/u16:3+events_unbound00:22:086
4037574992725,2cyclictest437749-21kworker/u16:3+events_unbound00:22:086
4037574992725,2cyclictest437748-21kworker/u16:2+events_unbound23:42:576
4037574992725,2cyclictest4068929-21kworker/u16:0+events_unbound19:14:306
4037574992725,2cyclictest4022578-21kworker/u16:2+events_unbound20:25:426
4037574992725,2cyclictest4022578-21kworker/u16:2+events_unbound20:10:106
4037574992725,2cyclictest4022578-21kworker/u16:2+events_unbound20:01:476
4037574992725,2cyclictest3989139-21kworker/u16:1+events_unbound20:19:466
4037574992724,2cyclictest124544-21kworker/u16:1+events_unbound21:32:246
4037570992725,2cyclictest340483-21kworker/u16:0+events_unbound23:17:405
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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