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2026-07-02 - 03:09
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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 Thu Jul 02, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
39975502940,1sleep60-21swapper/621:34:016
3699409994845,2cyclictest3781044-21kworker/u16:2+events_unbound21:54:304
369881524737,7sleep40-21swapper/419:04:574
3699409994644,2cyclictest96383-21kworker/u16:3+events_unbound23:59:314
369902424611,30sleep70-21swapper/719:07:577
369941899450,43cyclictest217923-21latency_hist00:24:017
3699409994543,2cyclictest3781044-21kworker/u16:2+events_unbound22:54:034
3699418994439,4cyclictest3936585-21latency_hist21:09:017
369887424131,7sleep50-21swapper/519:05:465
3699409993634,2cyclictest4192535-21kworker/u16:1+events_unbound23:19:024
3699409993634,2cyclictest4165367-21kworker/u16:0+events_unbound22:40:344
3699409993634,2cyclictest3809914-21kworker/u16:0+events_unbound21:52:104
369941899350,33cyclictest4055566-21sed21:54:307
3699409993533,2cyclictest69499-21kworker/u16:2+flush-8:023:27:464
3699409993533,2cyclictest3961018-21kworker/u16:3+events_unbound21:38:154
3699409993533,2cyclictest230408-21kworker/u16:0+events_unbound00:32:114
369881723524,8sleep60-21swapper/619:04:596
3699409993433,1cyclictest69499-21kworker/u16:2+events_unbound23:37:464
3699409993432,2cyclictest4192535-21kworker/u16:1+events_unbound23:33:004
3699409993432,2cyclictest4192535-21kworker/u16:1+events_unbound23:00:304
3699409993432,2cyclictest4192535-21kworker/u16:1+events_unbound00:37:434
3699409993432,2cyclictest4192535-21kworker/u16:1+events_unbound00:16:434
3699409993432,2cyclictest4165367-21kworker/u16:0+events_unbound23:13:394
3699409993432,2cyclictest4165367-21kworker/u16:0+events_unbound23:13:394
3699409993432,2cyclictest4143834-21kworker/u16:1+events_unbound22:35:394
3699409993432,2cyclictest3961018-21kworker/u16:3+events_unbound21:46:474
3699409993432,2cyclictest3781044-21kworker/u16:2+events_unbound22:52:154
3699409993432,2cyclictest3781044-21kworker/u16:2+events_unbound21:40:594
3699409993432,2cyclictest3706011-21kworker/u16:3+events_unbound19:09:324
3699409993332,1cyclictest3961018-21kworker/u16:3+events_unbound22:22:194
3699409993331,2cyclictest96383-21kworker/u16:3+events_unbound23:50:264
3699409993331,2cyclictest96383-21kworker/u16:3+events_unbound23:46:064
3699409993331,2cyclictest4192535-21kworker/u16:1+events_unbound23:56:144
3699409993331,2cyclictest3809914-21kworker/u16:0+events_unbound22:15:194
3699409993331,2cyclictest3809914-21kworker/u16:0+events_unbound21:30:204
3699409993331,2cyclictest3781044-21kworker/u16:2+events_unbound21:27:444
3699409993331,2cyclictest195109-21kworker/u16:3+events_unbound00:28:504
3699409993230,2cyclictest4192535-21kworker/u16:1+events_unbound00:21:114
3699409993230,2cyclictest4165367-21kworker/u16:0+events_unbound23:05:194
3699409993230,2cyclictest3809914-21kworker/u16:0+events_unbound22:33:594
3699409993230,2cyclictest3809914-21kworker/u16:0+events_unbound21:11:314
3699409993230,2cyclictest3781044-21kworker/u16:2+events_unbound22:27:034
3699409993230,2cyclictest3781044-21kworker/u16:2+events_unbound21:23:554
3699418993130,0cyclictest0-21swapper/720:09:237
3699418993130,0cyclictest0-21swapper/719:14:027
3699418993125,5cyclictest3858783-21latency_hist20:29:017
3699418993125,5cyclictest3858783-21latency_hist20:29:017
3699409993129,2cyclictest4192535-21kworker/u16:1+events_unbound00:11:584
3699409993129,2cyclictest4165367-21kworker/u16:0+events_unbound22:48:404
3699409993129,2cyclictest3961018-21kworker/u16:3+flush-8:021:59:394
3699409993129,2cyclictest3937012-21kworker/u16:1+events_unbound21:17:194
41557302300,1chrt0-21swapper/622:39:016
38799742300,1sleep4631rcuc/420:39:194
3699418993029,0cyclictest0-21swapper/721:14:397
39308032290,1chrt0-21swapper/421:04:184
3699418992928,0cyclictest0-21swapper/722:23:307
3699418992927,1cyclictest4006777-21switchtime21:34:317
3699416992927,2cyclictest3645107-21kworker/u16:0+flush-8:019:39:276
3699409992927,2cyclictest96383-21kworker/u16:3+events_unbound23:41:034
3699409992927,2cyclictest4192535-21kworker/u16:1+events_unbound23:18:484
3699409992927,2cyclictest3670719-21kworker/u16:2+events_unbound19:18:124
3699409992826,2cyclictest3961018-21kworker/u16:3+events_unbound22:08:484
3699409992826,2cyclictest3781044-21kworker/u16:2+events_unbound20:09:044
718712270,1chrt71870-21ssh23:23:587
3699409992725,2cyclictest3809914-21kworker/u16:0+events_unbound22:11:484
1295922270,1chrt129578-21ssh23:44:257
3699418992625,0cyclictest0-21swapper/722:46:317
3699409992624,2cyclictest3809914-21kworker/u16:0+events_unbound20:36:124
3699409992624,2cyclictest166771-21kworker/u16:5+events_unbound00:05:234
3699418992524,0cyclictest0-21swapper/721:24:317
3699418992523,1cyclictest0-21swapper/723:31:247
3699409992523,2cyclictest3781044-21kworker/u16:2+events_unbound19:52:124
3699409992523,2cyclictest3670719-21kworker/u16:2+events_unbound19:26:114
3699409992523,2cyclictest3645107-21kworker/u16:0+events_unbound19:40:114
3699409992522,2cyclictest3742448-21kworker/u16:1+events_unbound19:44:114
3699418992422,1cyclictest16750irq/16-ehci_hcd:usb400:33:507
3699409992422,2cyclictest3868875-21kworker/u16:3+events_unbound20:50:114
3699409992422,2cyclictest3742448-21kworker/u16:1+events_unbound19:59:014
3699418992321,1cyclictest106-21kcompactd022:29:067
3699409992321,2cyclictest3809914-21kworker/u16:0+events_unbound21:04:014
3699418992221,0cyclictest0-21swapper/722:10:127
3699418992221,0cyclictest0-21swapper/721:44:107
3699418992221,0cyclictest0-21swapper/700:37:107
369941899220,20cyclictest5934-21gnome-shell00:27:107
3699418992120,0cyclictest0-21swapper/723:58:547
3699418992120,0cyclictest0-21swapper/722:14:367
3699418992120,0cyclictest0-21swapper/721:51:037
3699418992119,1cyclictest16750irq/16-ehci_hcd:usb421:32:037
3699418992117,3cyclictest16750irq/16-ehci_hcd:usb422:43:037
3699409992119,2cyclictest3809914-21kworker/u16:0+events_unbound20:55:004
3699418992017,2cyclictest3972674-21ssh21:23:077
3699418992017,2cyclictest3868494-21perf20:34:017
3699418992017,2cyclictest3781010-21munin-run19:49:017
3699409992018,2cyclictest2993921-21kworker/u16:7+events_unbound20:00:034
3699418991918,0cyclictest0-21swapper/723:37:307
3699418991917,1cyclictest0-21swapper/722:49:067
3699418991914,4cyclictest3751801-21latency_hist19:34:017
3699418991817,0cyclictest0-21swapper/723:15:597
3699418991817,0cyclictest0-21swapper/723:10:167
3699418991817,0cyclictest0-21swapper/723:10:167
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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