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2026-07-23 - 10:19
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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 23, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11942392970,1sleep71194240-21sh00:27:047
9282152750,1sleep7928214-21ssh22:25:557
49711426336,8sleep40-21swapper/419:09:224
49684125419,30sleep70-21swapper/719:05:327
49698124636,7sleep50-21swapper/519:07:305
497394994442,2cyclictest893951-21kworker/u16:0+events_unbound22:59:256
497391993935,3cyclictest807900-21latency_hist21:39:245
497394993836,2cyclictest1058282-21kworker/u16:0+flush-8:000:19:396
497387993735,2cyclictest1205379-21kworker/u16:0+flush-8:000:34:234
497394993633,2cyclictest433182-21kworker/u16:0+events_unbound21:19:386
497397993533,1cyclictest0-21swapper/722:16:517
497387993533,2cyclictest756680-21kworker/u16:2+flush-8:021:39:594
497387993532,3cyclictest959718-21kworker/u16:2+flush-8:000:34:304
49685823525,7sleep60-21swapper/619:05:476
497387993432,2cyclictest973245-21kworker/u16:4+events_unbound23:09:184
497387993230,2cyclictest893951-21kworker/u16:0+flush-8:022:19:594
497387993230,2cyclictest795965-21kworker/u16:1+events_unbound21:56:344
497387993229,2cyclictest936307-21kworker/u16:1+flush-8:023:19:344
497397993130,0cyclictest0-21swapper/723:57:347
497397993130,0cyclictest0-21swapper/721:12:357
497397993128,2cyclictest734580-21diskmemload22:48:357
497387993129,2cyclictest959718-21kworker/u16:2+events_unbound23:39:474
497387993129,2cyclictest959718-21kworker/u16:2+events_unbound22:49:354
497387993129,2cyclictest1058282-21kworker/u16:0+events_unbound23:59:454
497387993129,2cyclictest1058282-21kworker/u16:0+events_unbound23:54:304
497387993128,2cyclictest1095339-21kworker/u16:1+events_unbound00:14:264
497387993128,2cyclictest1058282-21kworker/u16:0+flush-8:023:34:464
497394993028,2cyclictest936307-21kworker/u16:1+events_unbound23:19:476
497394992927,2cyclictest893952-21kworker/u16:3+flush-8:022:14:496
497387992927,2cyclictest795965-21kworker/u16:1+flush-8:021:49:344
497387992927,2cyclictest433182-21kworker/u16:0+events_unbound19:59:424
497397992827,0cyclictest0-21swapper/721:53:347
497397992826,1cyclictest983038-21ssh22:55:457
497397992826,1cyclictest0-21swapper/723:39:347
497397992825,1cyclictest794281-21ssh21:31:487
497394992826,2cyclictest856991-21kworker/u16:5+flush-8:022:04:196
497394992826,2cyclictest433182-21kworker/u16:0+events_unbound21:04:586
497394992826,2cyclictest1095339-21kworker/u16:1+flush-8:000:24:466
497387992826,2cyclictest936307-21kworker/u16:1+flush-8:023:18:534
497387992826,2cyclictest844788-21kworker/u16:0+events_unbound22:04:344
497387992826,2cyclictest676581-21kworker/u16:4+flush-8:021:16:114
497397992726,0cyclictest0-21swapper/723:53:357
497394992725,2cyclictest973245-21kworker/u16:4+events_unbound23:54:386
497394992725,2cyclictest433182-21kworker/u16:0+events_unbound19:29:466
497387992725,2cyclictest1095339-21kworker/u16:1+flush-8:000:23:344
497387992725,2cyclictest1058282-21kworker/u16:0+events_unbound23:46:354
497397992625,0cyclictest0-21swapper/723:26:347
497397992625,0cyclictest0-21swapper/723:11:027
497397992625,0cyclictest0-21swapper/723:11:027
497397992625,0cyclictest0-21swapper/723:01:347
497397992625,0cyclictest0-21swapper/721:16:267
497387992624,2cyclictest893951-21kworker/u16:0+events_unbound22:45:354
497387992624,2cyclictest795965-21kworker/u16:1+events_unbound21:44:584
497387992624,2cyclictest756680-21kworker/u16:2+events_unbound21:29:344
497397992524,0cyclictest0-21swapper/722:50:347
497397992524,0cyclictest0-21swapper/722:41:337
497397992524,0cyclictest0-21swapper/719:09:397
497397992523,1cyclictest783390-21ssh21:29:147
497397992522,1cyclictest880568-21sh22:08:067
497394992523,2cyclictest973245-21kworker/u16:4+events_unbound23:29:576
497394992523,2cyclictest433182-21kworker/u16:0+events_unbound21:24:506
497387992523,2cyclictest893951-21kworker/u16:0+events_unbound22:55:354
497387992523,2cyclictest735904-21kworker/u16:1+events_unbound21:12:184
497387992522,2cyclictest626722-21kworker/u16:1+flush-8:020:34:404
497387992522,2cyclictest626722-21kworker/u16:1+events_unbound20:54:374
497394992422,2cyclictest959718-21kworker/u16:2+events_unbound23:24:446
497394992422,2cyclictest893952-21kworker/u16:3+events_unbound22:36:536
497394992422,2cyclictest676581-21kworker/u16:4+flush-8:020:44:476
497394992422,2cyclictest676581-21kworker/u16:4+events_unbound21:16:306
497387992422,2cyclictest985197-21kworker/u16:5+events_unbound23:03:304
497387992422,2cyclictest959718-21kworker/u16:2+events_unbound00:27:224
497387992422,2cyclictest856991-21kworker/u16:5+flush-8:022:01:354
497387992422,2cyclictest795965-21kworker/u16:1+events_unbound22:09:594
497387992422,2cyclictest1095339-21kworker/u16:1+flush-8:000:07:424
497387992421,2cyclictest477665-21kworker/u16:2+events_unbound19:19:264
497397992322,0cyclictest0-21swapper/700:02:547
49739799230,21cyclictest916419-21ssh22:21:427
497394992321,2cyclictest676581-21kworker/u16:4+events_unbound22:05:356
497394992319,3cyclictest372951-21kworker/u16:4+flush-8:020:04:466
497387992321,2cyclictest959718-21kworker/u16:2+flush-8:023:33:344
497387992321,2cyclictest936307-21kworker/u16:1+events_unbound23:26:594
497397992221,0cyclictest0-21swapper/719:54:357
497397992221,0cyclictest0-21swapper/700:34:427
497397992220,1cyclictest1182194-21ssh00:22:157
497394992221,1cyclictest676581-21kworker/u16:4+events_unbound21:46:536
497387992220,2cyclictest973245-21kworker/u16:4+events_unbound23:51:344
497387992220,2cyclictest930246-21kworker/u16:4+flush-8:022:36:344
497387992220,2cyclictest759278-21kworker/u16:3+events_unbound21:26:594
497387992220,2cyclictest433182-21kworker/u16:0+flush-8:021:35:184
497387992220,2cyclictest433182-21kworker/u16:0+events_unbound21:19:434
497387992220,2cyclictest1095339-21kworker/u16:1+events_unbound00:13:554
497397992120,0cyclictest0-21swapper/700:11:467
497397992119,1cyclictest930880-21ssh22:30:097
497397992119,1cyclictest734580-21diskmemload23:37:017
497397992119,1cyclictest0-21swapper/719:29:487
497397992118,2cyclictest1302-21snmpd22:09:447
497394992119,2cyclictest676581-21kworker/u16:4+events_unbound21:12:306
497394992119,2cyclictest653249-21kworker/u16:2+flush-8:020:29:406
497394992119,2cyclictest653249-21kworker/u16:2+flush-8:020:29:406
497394992119,2cyclictest1058282-21kworker/u16:0+flush-8:023:47:346
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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