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2026-08-03 - 09:00
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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 Aug 03, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
254353825217,30sleep70-21swapper/719:06:507
2543971994946,2cyclictest2902734-21kworker/u16:1+flush-8:022:28:414
2543971994946,2cyclictest2902734-21kworker/u16:1+flush-8:022:28:414
2543977994744,2cyclictest2914845-21kworker/u16:4+flush-8:022:09:136
254339524619,7sleep50-21swapper/519:04:485
2543981994438,5cyclictest2963291-21latency_hist22:23:417
32362142430,0sleep60-21swapper/600:14:056
2543971994340,2cyclictest2999724-21kworker/u16:3+flush-8:023:48:594
2543971994339,3cyclictest2693890-21kworker/u16:2+flush-8:022:03:594
2543981994135,5cyclictest2576882-21latency_hist19:23:427
254358024130,8sleep40-21swapper/419:07:284
28712412400,0sleep72871244-21kthreadcore21:44:037
28712412400,0sleep72871244-21kthreadcore21:44:037
27324702400,0sleep72732471-21grep20:39:127
2543981994037,2cyclictest3170627-21/usr/sbin/munin23:48:587
2543971993735,2cyclictest2590494-21kworker/u16:3+flush-8:019:38:544
2543971993634,2cyclictest2693890-21kworker/u16:2+flush-8:021:34:164
2543971993633,2cyclictest2914845-21kworker/u16:4+flush-8:022:39:074
2543971993632,3cyclictest2655312-21kworker/u16:1+flush-8:020:04:134
254357323626,7sleep60-21swapper/619:07:226
2543971993330,2cyclictest2742308-21kworker/u16:3+flush-8:021:18:484
2543971993330,2cyclictest2742308-21kworker/u16:3+events_unbound21:24:004
2543981993231,0cyclictest0-21swapper/700:15:197
2543971993228,3cyclictest2590494-21kworker/u16:3+flush-8:019:59:084
2543971993029,1cyclictest2590494-21kworker/u16:3+events_unbound19:34:104
2543971993029,1cyclictest2590494-21kworker/u16:3+events_unbound19:34:104
2543971993028,2cyclictest2914845-21kworker/u16:4+flush-8:022:58:594
2543971993028,2cyclictest2693890-21kworker/u16:2+flush-8:021:58:594
2543971993026,3cyclictest2902734-21kworker/u16:1+flush-8:022:33:484
2543971992927,2cyclictest2514905-21kworker/u16:4+flush-8:019:48:424
2543981992824,3cyclictest648-21systemd-journal21:33:377
2543977992826,2cyclictest2514905-21kworker/u16:4+flush-8:019:29:076
2543971992826,2cyclictest2712764-21kworker/u16:1+flush-8:020:54:084
2543981992726,0cyclictest0-21swapper/722:17:547
2543981992726,0cyclictest0-21swapper/720:46:017
2543981992726,0cyclictest0-21swapper/720:22:407
2543981992726,0cyclictest0-21swapper/719:38:087
2543981992726,0cyclictest0-21swapper/719:38:087
2543977992725,2cyclictest2914845-21kworker/u16:4+flush-8:023:34:046
2543981992625,0cyclictest0-21swapper/723:39:157
2543981992625,0cyclictest0-21swapper/721:17:197
2543981992625,0cyclictest0-21swapper/719:14:367
2543981992623,2cyclictest3108722-21ssh23:23:267
2543971992624,2cyclictest3217988-21kworker/u16:0+flush-8:000:28:414
2543981992524,0cyclictest0-21swapper/720:31:047
2543981992524,0cyclictest0-21swapper/720:11:497
2543981992524,0cyclictest0-21swapper/700:20:187
2543981992524,0cyclictest0-21swapper/700:10:527
28216332240,1sleep50-21swapper/521:24:055
2543981992423,0cyclictest0-21swapper/723:37:137
2543981992423,0cyclictest0-21swapper/722:48:357
2543981992423,0cyclictest0-21swapper/721:06:057
2543981992423,0cyclictest0-21swapper/721:06:057
2543981992423,0cyclictest0-21swapper/720:01:167
2543981992423,0cyclictest0-21swapper/719:50:047
2543981992423,0cyclictest0-21swapper/719:48:407
2543981992419,3cyclictest2846086-21cat21:34:037
254398199240,22cyclictest5955-21gsd-housekeepin21:59:347
29470942230,1chrt0-21swapper/422:14:054
2543981992322,0cyclictest0-21swapper/721:20:277
2543981992322,0cyclictest0-21swapper/721:02:207
2543981992322,0cyclictest0-21swapper/720:56:437
2543981992322,0cyclictest0-21swapper/719:25:357
2543977992321,2cyclictest3096416-21kworker/u16:1+flush-8:023:23:166
2543971992321,2cyclictest3096416-21kworker/u16:1+events_unbound23:54:014
2543971992321,2cyclictest2275960-21kworker/u16:2+flush-8:019:13:424
2543981992221,0cyclictest0-21swapper/719:43:397
2543971992220,2cyclictest3016686-21kworker/u16:5+flush-8:022:56:524
2543971992219,2cyclictest2999724-21kworker/u16:3+flush-8:000:14:004
2543971992219,2cyclictest2902734-21kworker/u16:1+flush-8:022:18:424
2543981992120,0cyclictest0-21swapper/720:51:167
2543981992119,1cyclictest3094610-21ssh23:14:327
2543981992119,1cyclictest2781615-21diskmemload22:28:577
2543981992118,2cyclictest3037855-21kthreadcore22:54:027
2543971992119,2cyclictest3096416-21kworker/u16:1+flush-8:000:04:194
2543971992119,2cyclictest2999724-21kworker/u16:3+flush-8:023:39:114
2543981992019,0cyclictest0-21swapper/721:41:477
2543981992019,0cyclictest0-21swapper/720:23:587
2543981992016,3cyclictest2787219-21cut21:09:037
2543971992018,2cyclictest3016686-21kworker/u16:5+flush-8:022:47:394
2543981991918,0cyclictest0-21swapper/722:25:597
2543981991918,0cyclictest0-21swapper/722:25:597
2543981991918,0cyclictest0-21swapper/719:29:407
2543981991918,0cyclictest0-21swapper/719:11:047
2543971991917,2cyclictest2999724-21kworker/u16:3+events_unbound23:08:414
2543971991917,2cyclictest2854646-21kworker/u16:3+flush-8:021:54:074
2543981991817,0cyclictest0-21swapper/722:35:277
2543981991817,0cyclictest0-21swapper/722:11:337
2543981991817,0cyclictest0-21swapper/722:08:197
2543971991816,2cyclictest3096416-21kworker/u16:1+events_unbound23:29:164
2543971991815,2cyclictest2712764-21kworker/u16:1+flush-8:020:58:574
2543981991716,0cyclictest0-21swapper/723:24:367
2543981991716,0cyclictest0-21swapper/700:05:297
2543981991715,1cyclictest3132497-21ssh23:32:337
254398199170,15cyclictest2714581-21wc20:33:587
2543977991715,2cyclictest2914845-21kworker/u16:4+flush-8:022:33:526
2543971991715,2cyclictest2914845-21kworker/u16:4+events_unbound23:09:324
2543971991715,2cyclictest2914845-21kworker/u16:4+events_unbound23:09:324
2543971991715,2cyclictest2842333-21kworker/u16:0+events_unbound21:38:594
2543971991714,2cyclictest2742308-21kworker/u16:3+flush-8:021:08:594
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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