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2026-07-07 - 14:27
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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 Tue Jul 07, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11219122950,1sleep71121913-21rm10:35:547
65188224915,29sleep70-21swapper/707:08:177
652488994843,4cyclictest1321508-21latency_hist11:59:577
652488994442,1cyclictest0-21swapper/712:06:317
652488993834,2cyclictest760593-21munin-run07:59:577
627889380,31rtkit-daemon0-21swapper/507:05:025
652484993634,2cyclictest719217-21kworker/u16:1+events_unbound08:09:576
652480993533,2cyclictest961544-21kworker/u16:1+flush-8:010:24:565
652480993533,2cyclictest961544-21kworker/u16:1+events_unbound09:58:135
652484993432,2cyclictest961544-21kworker/u16:1+flush-8:010:09:526
652480993429,2cyclictest1112176-21kworker/u16:0+events_unbound10:38:095
652480993331,2cyclictest939597-21kworker/u16:0+events_unbound09:46:285
652480993331,2cyclictest1062939-21kworker/u16:3+events_unbound10:43:085
652488993228,3cyclictest914456-21latency_hist09:14:577
652488993227,4cyclictest1296792-21latency_hist11:49:577
652488993227,4cyclictest1296792-21latency_hist11:49:577
652484993230,2cyclictest782690-21kworker/u16:3+flush-8:008:54:576
652480993230,2cyclictest1371636-21kworker/u16:2+events_unbound12:28:485
652480993230,2cyclictest1371636-21kworker/u16:2+events_unbound12:28:485
652480993230,2cyclictest1343958-21kworker/u16:4+flush-8:012:18:055
652480993230,2cyclictest1343958-21kworker/u16:4+events_unbound12:14:485
652480993230,2cyclictest1161570-21kworker/u16:0+events_unbound11:21:175
652488993130,0cyclictest0-21swapper/710:26:247
652488993128,2cyclictest1383251-21ssh12:21:447
652488993128,2cyclictest1210886-21ssh11:15:017
652484993127,3cyclictest781670-21kworker/u16:2+flush-8:008:10:126
652480993129,2cyclictest939597-21kworker/u16:0+events_unbound09:52:335
652480993129,2cyclictest939597-21kworker/u16:0+events_unbound09:40:445
652480993129,2cyclictest939597-21kworker/u16:0+events_unbound09:40:445
652480993129,2cyclictest924374-21kworker/u16:4+events_unbound09:18:335
652480993129,2cyclictest1161570-21kworker/u16:0+events_unbound11:40:415
652480993129,2cyclictest1133961-21kworker/u16:1+flush-8:010:54:575
652480993128,2cyclictest1013168-21kworker/u16:5+events_unbound10:05:005
652488993029,0cyclictest0-21swapper/710:09:597
652488993029,0cyclictest0-21swapper/709:44:097
652488993029,0cyclictest0-21swapper/709:44:097
652488993029,0cyclictest0-21swapper/709:27:127
652488993028,1cyclictest1369994-21ssh12:16:087
652488993027,2cyclictest1011702-21ssh09:52:287
652480993029,1cyclictest1133961-21kworker/u16:1+events_unbound11:19:255
652480993028,2cyclictest924374-21kworker/u16:4+events_unbound09:28:335
652480993028,2cyclictest1397860-21kworker/u16:3+events_unbound12:36:455
652480993028,2cyclictest1397860-21kworker/u16:3+events_unbound12:32:195
652480993028,2cyclictest1333793-21kworker/u16:1+events_unbound12:22:095
652480993028,2cyclictest1161570-21kworker/u16:0+events_unbound11:36:045
652480993028,2cyclictest1133961-21kworker/u16:1+flush-8:010:55:375
652480993028,2cyclictest1133961-21kworker/u16:1+events_unbound11:48:485
652480993028,2cyclictest1133961-21kworker/u16:1+events_unbound11:48:485
652480993028,2cyclictest1060244-21kworker/u16:2+events_unbound11:53:045
652480993028,2cyclictest1060244-21kworker/u16:2+events_unbound10:46:415
652478993028,2cyclictest1133961-21kworker/u16:1+flush-8:010:50:284
65205923020,7sleep60-21swapper/607:09:136
652488992928,0cyclictest0-21swapper/712:12:057
652488992928,0cyclictest0-21swapper/711:35:377
652488992928,0cyclictest0-21swapper/710:21:177
652488992927,1cyclictest0-21swapper/709:38:337
652488992926,2cyclictest1233543-21ssh11:22:047
652480992927,2cyclictest961544-21kworker/u16:1+events_unbound09:32:045
652480992927,2cyclictest782690-21kworker/u16:3+events_unbound09:37:305
652480992927,2cyclictest1161570-21kworker/u16:0+events_unbound12:02:525
652480992927,2cyclictest1161570-21kworker/u16:0+events_unbound11:04:095
652480992927,2cyclictest1062939-21kworker/u16:3+events_unbound10:27:225
652480992927,2cyclictest1060244-21kworker/u16:2+events_unbound11:06:165
652480992927,2cyclictest1060244-21kworker/u16:2+events_unbound11:06:165
652480992927,2cyclictest1060244-21kworker/u16:2+events_unbound10:17:245
652480992927,2cyclictest1013168-21kworker/u16:5+events_unbound10:12:295
652488992827,0cyclictest0-21swapper/712:04:487
652488992827,0cyclictest0-21swapper/710:51:057
652488992826,1cyclictest0-21swapper/711:29:557
652488992825,2cyclictest1408781-21ssh12:31:567
652488992823,4cyclictest1397995-21latency_hist12:29:567
652488992823,4cyclictest1397995-21latency_hist12:29:567
652480992826,2cyclictest719217-21kworker/u16:1+flush-8:008:20:265
652480992826,2cyclictest600455-21kworker/u16:3+flush-8:007:19:575
652480992826,2cyclictest1062939-21kworker/u16:3+events_unbound10:31:175
652480992826,2cyclictest1013168-21kworker/u16:5+events_unbound10:04:015
652478992826,2cyclictest1060244-21kworker/u16:2+flush-8:012:06:044
652478992826,2cyclictest1060244-21kworker/u16:2+events_unbound11:50:124
652488992725,1cyclictest0-21swapper/709:31:567
652488992722,3cyclictest925147-21sh09:17:057
652484992725,2cyclictest1161570-21kworker/u16:0+events_unbound11:17:326
652480992725,2cyclictest892852-21kworker/u16:2+events_unbound09:14:385
652480992725,2cyclictest697769-21kworker/u16:0+flush-8:008:29:575
652480992725,2cyclictest1161570-21kworker/u16:0+events_unbound11:58:235
652480992725,2cyclictest1060244-21kworker/u16:2+events_unbound11:12:005
65202322716,7sleep40-21swapper/407:09:034
12914972270,1chrt841rcuc/611:45:176
12914972270,1chrt841rcuc/611:45:176
652488992625,0cyclictest0-21swapper/710:40:537
652488992625,0cyclictest0-21swapper/710:18:057
652488992624,1cyclictest936727-21ssh09:20:407
652488992624,1cyclictest1050157-21ssh10:09:517
65248899260,1cyclictest0-21swapper/707:10:217
652484992624,2cyclictest782690-21kworker/u16:3+events_unbound09:40:406
652484992624,2cyclictest782690-21kworker/u16:3+events_unbound09:40:406
652484992624,2cyclictest1060244-21kworker/u16:2+events_unbound10:40:166
652484992624,2cyclictest1060244-21kworker/u16:2+events_unbound10:27:326
652480992624,2cyclictest782690-21kworker/u16:3+events_unbound09:22:415
652478992622,3cyclictest1397861-21kworker/u16:5+flush-8:012:30:094
652488992524,0cyclictest0-21swapper/711:02:417
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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