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2025-11-24 - 22:02
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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 100 highest latencies:
System rack0slot2.osadl.org (updated Mon Nov 24, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
299759025241,7sleep50-21swapper/515:22:495
299800699510,49cyclictest3163670-21latency_hist16:43:237
2998005995149,2cyclictest3486559-21kworker/u16:3+events_unbound19:21:446
2998000995148,2cyclictest3446959-21kworker/u16:2+events_unbound19:20:454
2998000995048,2cyclictest3446959-21kworker/u16:2+events_unbound19:27:454
2998000995048,2cyclictest3183888-21kworker/u16:5+flush-8:018:50:454
2998000994846,2cyclictest1574040-21kworker/u16:0+events_unbound15:47:464
2998000994745,2cyclictest3405816-21kworker/u16:0+flush-8:019:09:454
2998000994745,2cyclictest3405816-21kworker/u16:0+flush-8:019:09:454
299756924736,8sleep40-21swapper/415:22:324
2998006994644,1cyclictest0-21swapper/719:11:447
2998006994644,1cyclictest0-21swapper/719:11:447
2998000994644,2cyclictest3477121-21kworker/u16:1+events_unbound20:14:244
2998006994540,4cyclictest3588694-21latency_hist20:13:237
299742924511,30sleep70-21swapper/715:20:347
2998000994240,2cyclictest3092555-21kworker/u16:3+flush-8:016:08:484
2998000994240,2cyclictest3092555-21kworker/u16:3+flush-8:016:08:484
2998006994140,0cyclictest0-21swapper/718:35:467
2998006994140,0cyclictest0-21swapper/716:10:457
2998006994140,0cyclictest0-21swapper/716:10:457
2998006994136,4cyclictest3477448-21latency_hist19:18:237
2998000994139,2cyclictest3183888-21kworker/u16:5+events_unbound17:50:444
2998000994139,2cyclictest3182899-21kworker/u16:3+flush-8:017:39:364
2998000994139,2cyclictest3182899-21kworker/u16:3+flush-8:017:39:364
2998000994139,2cyclictest1574040-21kworker/u16:0+flush-8:016:23:484
299754324129,8sleep60-21swapper/615:22:106
2998006994038,1cyclictest0-21swapper/717:45:457
2998005994038,2cyclictest3042304-21kworker/u16:1+events_unbound15:53:386
2998000994038,2cyclictest3657516-21kworker/u16:3+events_unbound20:46:454
2998000994038,2cyclictest3557425-21kworker/u16:5+flush-8:020:04:284
2998005993937,2cyclictest3365336-21kworker/u16:3+events_unbound18:31:446
2998006993836,1cyclictest0-21swapper/719:04:447
2998006993836,1cyclictest0-21swapper/716:37:467
2998006993835,2cyclictest3026792-21kthreadcore15:33:437
2998006993833,4cyclictest589235-21systemd-journal17:52:447
2998000993836,2cyclictest3557425-21kworker/u16:5+events_unbound20:32:444
2998000993836,2cyclictest1574040-21kworker/u16:0+events_unbound15:56:444
2998005993734,2cyclictest3446959-21kworker/u16:2+flush-8:020:03:496
2998005993734,2cyclictest3182899-21kworker/u16:3+flush-8:017:48:326
2998004993735,2cyclictest3557425-21kworker/u16:5+flush-8:020:03:515
2998004993735,2cyclictest3092555-21kworker/u16:3+flush-8:016:08:495
2998004993735,2cyclictest3092555-21kworker/u16:3+flush-8:016:08:495
2998006993635,0cyclictest0-21swapper/717:22:337
2998005993634,2cyclictest3477121-21kworker/u16:1+events_unbound19:47:326
2998004993633,2cyclictest3334983-21kworker/u16:4+events_unbound18:23:325
2998004993633,2cyclictest3334983-21kworker/u16:4+events_unbound18:23:325
2998000993634,2cyclictest3356308-21kworker/u16:0+events_unbound18:20:454
2998000993634,2cyclictest3133052-21kworker/u16:1+events_unbound16:30:264
2998000993634,2cyclictest3092555-21kworker/u16:3+flush-8:016:20:454
2998000993633,2cyclictest3477121-21kworker/u16:1+events_unbound19:48:244
2998004993533,2cyclictest3446959-21kworker/u16:2+flush-8:019:28:255
2998004993533,2cyclictest3133052-21kworker/u16:1+flush-8:016:28:495
2998000993533,2cyclictest3587743-21kworker/u16:0+events_unbound20:26:334
2998000993533,2cyclictest3477121-21kworker/u16:1+flush-8:019:34:364
2998000993533,2cyclictest3183888-21kworker/u16:5+flush-8:017:59:334
2998004993432,2cyclictest1574040-21kworker/u16:0+flush-8:015:25:575
2998004993432,2cyclictest1574040-21kworker/u16:0+flush-8:015:25:575
2998000993432,2cyclictest3477121-21kworker/u16:1+events_unbound20:12:444
2998000993431,2cyclictest3587743-21kworker/u16:0+events_unbound20:18:324
2998006993332,0cyclictest0-21swapper/718:42:337
299800699330,31cyclictest3447143-21latency_hist19:03:237
2998005993331,2cyclictest3537960-21kworker/u16:0+flush-8:019:55:256
2998005993331,2cyclictest3537960-21kworker/u16:0+flush-8:019:55:256
2998005993331,2cyclictest3222035-21kworker/u16:2+events_unbound17:45:376
2998005993331,2cyclictest3092555-21kworker/u16:3+events_unbound16:08:496
2998005993331,2cyclictest3092555-21kworker/u16:3+events_unbound16:08:496
2998004993331,2cyclictest3183888-21kworker/u16:5+events_unbound17:35:415
2998004993331,2cyclictest3042304-21kworker/u16:1+events_unbound15:44:465
2998000993331,2cyclictest3405816-21kworker/u16:0+events_unbound19:07:444
2998000993331,2cyclictest3376843-21kworker/u16:1+events_unbound18:28:524
2998000993331,2cyclictest1574040-21kworker/u16:0+flush-8:015:32:064
2998006993231,0cyclictest0-21swapper/716:26:337
2998006993227,4cyclictest3527982-21latency_hist19:43:227
2998005993230,2cyclictest3417221-21kworker/u16:1+events_unbound19:00:366
2998005993230,2cyclictest3203897-21kworker/u16:1+flush-8:017:00:096
2998005993230,2cyclictest3183888-21kworker/u16:5+events_unbound17:56:376
2998005993230,2cyclictest3143107-21kworker/u16:2+events_unbound16:34:386
2998005993230,2cyclictest3042304-21kworker/u16:1+flush-8:016:14:256
2998005993230,2cyclictest2941111-21kworker/u16:4+flush-8:015:34:446
2998004993230,2cyclictest3657516-21kworker/u16:3+flush-8:020:45:565
2998004993230,2cyclictest3537960-21kworker/u16:0+flush-8:019:56:175
2998004993230,2cyclictest3537960-21kworker/u16:0+flush-8:019:56:175
2998004993230,2cyclictest3477121-21kworker/u16:1+flush-8:020:27:485
2998004993230,2cyclictest3477121-21kworker/u16:1+events_unbound19:34:285
2998004993230,2cyclictest3446959-21kworker/u16:2+events_unbound19:24:285
2998004993230,2cyclictest3365336-21kworker/u16:3+flush-8:018:56:045
2998004993230,2cyclictest3042304-21kworker/u16:1+events_unbound16:05:375
2998000993230,2cyclictest3477121-21kworker/u16:1+events_unbound19:44:324
2998000993230,2cyclictest3183888-21kworker/u16:5+events_unbound17:25:334
2998000993230,2cyclictest3153485-21kworker/u16:0+flush-8:016:59:024
2998005993129,2cyclictest3376843-21kworker/u16:1+events_unbound18:39:376
2998005993129,2cyclictest3222035-21kworker/u16:2+flush-8:017:36:416
2998005993129,2cyclictest3183888-21kworker/u16:5+events_unbound17:20:306
2998004993129,2cyclictest3587743-21kworker/u16:0+flush-8:020:33:085
2998004993129,2cyclictest3182899-21kworker/u16:3+events_unbound17:39:335
2998004993129,2cyclictest3182899-21kworker/u16:3+events_unbound17:39:335
2998000993128,2cyclictest3183888-21kworker/u16:5+flush-8:017:28:334
2998006993028,1cyclictest0-21swapper/715:26:227
2998006993028,1cyclictest0-21swapper/715:26:227
2998006993025,3cyclictest3426932-21idleruntime-cro18:53:237
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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