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2026-06-11 - 06:58
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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 Jun 11, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
591515996260,2cyclictest1087690-21kworker/u16:4+events_unbound23:06:425
591515996260,2cyclictest1087690-21kworker/u16:4+events_unbound23:06:425
591515996159,2cyclictest1257984-21kworker/u16:5+flush-8:000:06:375
591515995351,2cyclictest1173952-21kworker/u16:2+events_unbound23:41:435
591515995350,2cyclictest1101201-21kworker/u16:0+flush-8:023:26:415
591515994947,2cyclictest945872-21kworker/u16:2+flush-8:022:06:425
59110624938,8sleep50-21swapper/519:04:235
591515994745,2cyclictest1087690-21kworker/u16:4+flush-8:023:01:245
591515994442,2cyclictest1257984-21kworker/u16:5+flush-8:000:16:415
591515994441,2cyclictest980062-21kworker/u16:3+events_unbound22:11:145
591515994341,2cyclictest796679-21kworker/u16:3+events_unbound21:55:585
591515994341,2cyclictest613568-21kworker/u16:0+events_unbound19:16:145
591515994240,2cyclictest1126422-21kworker/u16:1+flush-8:023:31:415
5909602424,32sleep70-21swapper/719:02:167
591515994139,2cyclictest1173952-21kworker/u16:2+flush-8:000:11:425
591515994139,2cyclictest1126422-21kworker/u16:1+events_unbound23:24:535
591515994138,2cyclictest919630-21kworker/u16:0+flush-8:022:26:455
591515994038,2cyclictest1026924-21kworker/u16:2+events_unbound22:41:365
591524993932,6cyclictest796891-21latency_hist20:51:127
591515993937,2cyclictest768476-21kworker/u16:1+events_unbound22:37:435
591515993937,2cyclictest768476-21kworker/u16:1+events_unbound22:04:305
591515993937,2cyclictest1234042-21kworker/u16:4+flush-8:000:01:325
591515993937,2cyclictest1101201-21kworker/u16:0+flush-8:023:16:415
591515993936,2cyclictest671820-21kworker/u16:2+events_unbound20:46:145
591515993735,2cyclictest980062-21kworker/u16:3+events_unbound22:19:375
591515993735,2cyclictest919630-21kworker/u16:0+flush-8:021:47:175
591515993735,2cyclictest919630-21kworker/u16:0+flush-8:021:47:175
591515993735,2cyclictest919630-21kworker/u16:0+events_unbound22:22:305
591515993735,2cyclictest919630-21kworker/u16:0+events_unbound21:58:385
591515993735,2cyclictest768476-21kworker/u16:1+events_unbound21:32:505
591515993735,2cyclictest768476-21kworker/u16:1+events_unbound21:22:295
591515993735,2cyclictest1173952-21kworker/u16:2+events_unbound23:59:095
591515993735,2cyclictest1126422-21kworker/u16:1+events_unbound23:14:535
591515993735,2cyclictest1101201-21kworker/u16:0+events_unbound23:53:425
591515993634,2cyclictest768476-21kworker/u16:1+flush-8:021:30:345
591515993634,2cyclictest768476-21kworker/u16:1+events_unbound22:33:415
591515993634,2cyclictest768476-21kworker/u16:1+events_unbound21:37:185
591515993634,2cyclictest768476-21kworker/u16:1+events_unbound21:11:445
591515993634,2cyclictest1173952-21kworker/u16:2+events_unbound00:33:255
591515993634,2cyclictest1173952-21kworker/u16:2+events_unbound00:29:385
591515993634,2cyclictest1173952-21kworker/u16:2+events_unbound00:29:385
591515993533,2cyclictest768476-21kworker/u16:1+events_unbound22:52:385
591515993533,2cyclictest768476-21kworker/u16:1+events_unbound21:08:265
591515993533,2cyclictest768476-21kworker/u16:1+events_unbound21:08:265
591515993533,2cyclictest671820-21kworker/u16:2+events_unbound19:55:505
591515993533,2cyclictest1054362-21kworker/u16:3+events_unbound22:50:455
59113323525,7sleep40-21swapper/419:04:464
591524993427,6cyclictest635-21systemd-journal22:16:127
591515993432,2cyclictest816221-21kworker/u16:4+events_unbound21:18:305
591515993432,2cyclictest1054362-21kworker/u16:3+events_unbound23:49:345
591515993432,2cyclictest1054362-21kworker/u16:3+events_unbound23:49:345
591515993331,2cyclictest768476-21kworker/u16:1+flush-8:021:42:025
591515993331,2cyclictest671820-21kworker/u16:2+flush-8:020:36:325
591515993331,2cyclictest1173952-21kworker/u16:2+events_unbound23:40:335
59116523323,7sleep60-21swapper/619:05:126
591515993230,2cyclictest768476-21kworker/u16:1+flush-8:022:57:535
591515993230,2cyclictest652514-21kworker/u16:0+flush-8:019:36:395
591515993230,2cyclictest1173952-21kworker/u16:2+flush-8:000:22:255
591515993028,2cyclictest768476-21kworker/u16:1+events_unbound20:44:225
591515993028,2cyclictest652514-21kworker/u16:0+events_unbound19:57:225
591524992928,0cyclictest0-21swapper/719:06:357
591524992924,4cyclictest1329942-21latency_hist00:36:127
591515992926,2cyclictest671820-21kworker/u16:2+events_unbound20:06:145
591520992826,2cyclictest700882-21kworker/u16:4+events_unbound20:24:386
591515992826,2cyclictest768476-21kworker/u16:1+events_unbound21:03:225
591524992726,0cyclictest0-21swapper/721:46:377
591524992726,0cyclictest0-21swapper/721:46:377
591520992725,2cyclictest671820-21kworker/u16:2+events_unbound20:15:466
591520992725,2cyclictest1087690-21kworker/u16:4+flush-8:023:03:456
591515992725,2cyclictest652514-21kworker/u16:0+events_unbound20:01:215
12799492270,1sleep40-21swapper/400:12:094
12595182270,0chrt1259519-21irqcore00:06:277
591524992621,4cyclictest825784-21latency_hist21:06:127
591520992624,2cyclictest571932-21kworker/u16:1+events_unbound19:44:176
591520992624,2cyclictest1173952-21kworker/u16:2+events_unbound00:28:246
591520992624,2cyclictest1173952-21kworker/u16:2+events_unbound00:28:246
591520992624,2cyclictest1101201-21kworker/u16:0+events_unbound23:14:006
591515992624,2cyclictest700882-21kworker/u16:4+events_unbound20:24:505
591515992624,2cyclictest671820-21kworker/u16:2+flush-8:020:26:135
591515992624,2cyclictest671820-21kworker/u16:2+events_unbound20:57:145
591515992624,2cyclictest613568-21kworker/u16:0+events_unbound19:13:515
591515992624,2cyclictest571932-21kworker/u16:1+events_unbound19:36:025
591512992624,2cyclictest671820-21kworker/u16:2+flush-8:020:16:384
11011312260,1chrt1101129-21ssh22:59:357
591524992524,0cyclictest0-21swapper/720:51:307
591524992520,4cyclictest1197916-21latency_hist23:41:127
591515992523,2cyclictest671820-21kworker/u16:2+events_unbound20:13:515
591515992523,2cyclictest652514-21kworker/u16:0+events_unbound20:34:505
591520992422,2cyclictest796679-21kworker/u16:3+events_unbound20:50:496
591520992422,2cyclictest571932-21kworker/u16:1+events_unbound19:55:296
591515992422,2cyclictest671820-21kworker/u16:2+events_unbound19:44:225
591524992322,0cyclictest0-21swapper/719:31:387
591520992321,2cyclictest919630-21kworker/u16:0+events_unbound22:32:056
591520992321,2cyclictest796679-21kworker/u16:3+events_unbound21:22:446
591520992321,2cyclictest671820-21kworker/u16:2+events_unbound20:16:276
591520992321,2cyclictest571932-21kworker/u16:1+events_unbound19:30:066
591515992321,2cyclictest768476-21kworker/u16:1+flush-8:020:53:225
591515992321,2cyclictest671820-21kworker/u16:2+flush-8:019:49:225
591515992321,2cyclictest671820-21kworker/u16:2+flush-8:019:49:225
591512992321,2cyclictest537523-21kworker/u16:3+events_unbound19:11:154
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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