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2026-06-02 - 04:11
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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 Jun 02, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
156334325847,8sleep40-21swapper/419:04:404
1563791994846,2cyclictest1833041-21kworker/u16:0+events_unbound22:57:205
1563787994745,2cyclictest1625189-21kworker/u16:1+events_unbound19:46:484
156379799460,44cyclictest2291992-21latency_hist00:31:477
156333524636,7sleep50-21swapper/519:04:335
1563787994341,2cyclictest2120699-21kworker/u16:0+events_unbound00:36:474
1563791994240,2cyclictest1663310-21kworker/u16:3+events_unbound20:42:165
1563797994038,1cyclictest0-21swapper/721:06:517
1563791994038,2cyclictest1833041-21kworker/u16:0+events_unbound22:37:155
15632222403,31sleep70-21swapper/719:02:587
1563797993831,6cyclictest1740014-21latency_hist20:36:487
1563797993631,4cyclictest1653784-21latency_hist19:51:487
1563791993634,2cyclictest2207555-21kworker/u16:3+events_unbound00:04:305
1563791993634,2cyclictest2194251-21kworker/u16:1+events_unbound23:52:415
1563791993634,2cyclictest2194251-21kworker/u16:1+events_unbound23:52:415
1563791993634,2cyclictest2074864-21kworker/u16:4+events_unbound23:29:375
1563791993634,2cyclictest2026646-21kworker/u16:2+events_unbound22:56:105
1563791993634,2cyclictest1759587-21kworker/u16:1+events_unbound22:25:065
1563791993533,2cyclictest2217566-21kworker/u16:4+events_unbound00:00:105
1563791993533,2cyclictest2120699-21kworker/u16:0+events_unbound00:31:465
1563791993533,2cyclictest2074864-21kworker/u16:4+events_unbound23:47:305
1563791993533,2cyclictest2074864-21kworker/u16:4+events_unbound23:43:145
1563791993533,2cyclictest1833041-21kworker/u16:0+events_unbound21:42:535
1563791993533,2cyclictest1759587-21kworker/u16:1+events_unbound23:36:145
1563797993433,0cyclictest0-21swapper/722:57:267
1563797993432,1cyclictest0-21swapper/721:44:507
1563791993432,2cyclictest2062785-21kworker/u16:3+events_unbound23:05:545
1563791993432,2cyclictest1927768-21kworker/u16:2+events_unbound22:09:225
1563791993432,2cyclictest1833041-21kworker/u16:0+events_unbound22:45:025
1563791993432,2cyclictest1833041-21kworker/u16:0+events_unbound21:35:185
1563791993432,2cyclictest1772026-21kworker/u16:2+flush-8:021:22:335
1563791993432,2cyclictest1759588-21kworker/u16:4+events_unbound21:19:025
1563787993432,2cyclictest1833041-21kworker/u16:0+events_unbound21:26:344
1563797993332,0cyclictest0-21swapper/721:22:577
1563797993332,0cyclictest0-21swapper/700:19:587
1563797993331,1cyclictest2098235-21ssh23:10:257
1563797993331,1cyclictest1797618-21diskmemload23:56:457
1563797993331,1cyclictest1797618-21diskmemload23:56:457
1563791993331,2cyclictest2207555-21kworker/u16:3+events_unbound00:23:145
1563791993331,2cyclictest2207555-21kworker/u16:3+events_unbound00:13:335
1563791993331,2cyclictest2074864-21kworker/u16:4+events_unbound23:20:385
1563791993331,2cyclictest2062785-21kworker/u16:3+events_unbound23:08:095
1563797993229,2cyclictest1905813-21ssh21:51:147
1563791993230,2cyclictest2120699-21kworker/u16:0+events_unbound23:25:025
1563791993230,2cyclictest2074864-21kworker/u16:4+events_unbound23:37:385
1563791993230,2cyclictest2062785-21kworker/u16:3+events_unbound23:14:135
1563791993230,2cyclictest2062785-21kworker/u16:3+events_unbound23:14:135
1563791993230,2cyclictest1833041-21kworker/u16:0+events_unbound22:04:425
1563787993230,2cyclictest2074864-21kworker/u16:4+events_unbound23:46:454
1563797993130,0cyclictest0-21swapper/723:27:597
1563797993130,0cyclictest0-21swapper/700:07:347
1563797993129,1cyclictest1964447-21ssh22:13:187
1563797993129,1cyclictest0-21swapper/700:01:467
1563797993128,2cyclictest2001332-21ssh22:29:457
1563791993129,2cyclictest1894414-21kworker/u16:3+events_unbound21:55:375
1563791993129,2cyclictest1833041-21kworker/u16:0+events_unbound21:51:075
1563791993129,2cyclictest1759587-21kworker/u16:1+events_unbound21:14:335
1563791993129,2cyclictest1759587-21kworker/u16:1+events_unbound21:14:335
1563791993129,2cyclictest1702119-21kworker/u16:0+events_unbound20:26:505
1563791993129,2cyclictest1702119-21kworker/u16:0+events_unbound20:26:505
1563791993127,3cyclictest2120699-21kworker/u16:0+flush-8:000:32:355
156334523121,7sleep60-21swapper/619:04:426
1563797993029,0cyclictest0-21swapper/721:18:587
1563797993028,1cyclictest1797618-21diskmemload23:35:507
1563797993028,1cyclictest1797618-21diskmemload21:34:547
1563791993028,2cyclictest2217566-21kworker/u16:4+flush-8:000:10:095
1563791993028,2cyclictest2000096-21kworker/u16:3+events_unbound22:32:535
1563791993028,2cyclictest2000096-21kworker/u16:3+events_unbound22:32:535
1563787993028,2cyclictest2120699-21kworker/u16:0+flush-8:023:25:064
1563797992928,0cyclictest0-21swapper/722:37:267
1563797992928,0cyclictest0-21swapper/721:37:587
1563797992927,1cyclictest2121531-21ssh23:18:547
1563797992927,1cyclictest1928031-21ssh21:57:507
1563791992927,2cyclictest2000096-21kworker/u16:3+events_unbound22:27:385
1563791992927,2cyclictest1772026-21kworker/u16:2+events_unbound21:09:025
1563791992927,2cyclictest1563557-21kworker/u16:4+flush-8:019:17:225
1563787992927,2cyclictest2074864-21kworker/u16:4+flush-8:023:48:454
1563787992926,2cyclictest2074864-21kworker/u16:4+events_unbound23:31:504
1563797992827,0cyclictest0-21swapper/721:13:057
1563797992827,0cyclictest0-21swapper/721:13:057
1563797992827,0cyclictest0-21swapper/700:23:067
1563797992827,0cyclictest0-21swapper/700:15:057
1563797992826,1cyclictest2132764-21ssh23:22:257
1563797992826,1cyclictest2084731-21ssh23:02:417
1563797992826,1cyclictest2036253-21ssh22:42:267
156379799280,26cyclictest0-21swapper/720:12:127
1563792992826,2cyclictest1772026-21kworker/u16:2+events_unbound21:12:186
1563792992826,2cyclictest1772026-21kworker/u16:2+events_unbound21:12:186
1563791992826,2cyclictest2026646-21kworker/u16:2+events_unbound22:51:135
1563791992826,2cyclictest1500648-21kworker/u16:2+events_unbound20:12:515
1563787992826,2cyclictest1833041-21kworker/u16:0+flush-8:021:36:444
1563787992826,2cyclictest1759587-21kworker/u16:1+events_unbound21:27:094
1563797992726,0cyclictest0-21swapper/723:38:427
1563797992726,0cyclictest0-21swapper/723:13:437
1563797992726,0cyclictest0-21swapper/723:13:437
1563797992726,0cyclictest0-21swapper/720:26:347
1563792992725,2cyclictest1663310-21kworker/u16:3+events_unbound20:37:176
1563792992725,2cyclictest1563557-21kworker/u16:4+flush-8:019:27:146
1563791992725,2cyclictest1772026-21kworker/u16:2+events_unbound21:41:055
1563791992725,2cyclictest1759587-21kworker/u16:1+events_unbound21:29:225
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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