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2026-08-19 - 08:16
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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 Wed Aug 19, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
187440225924,30sleep70-21swapper/719:05:447
186526225847,7sleep40-21swapper/419:02:444
632489450,38rtkit-daemon0-21swapper/619:04:566
1874837994236,5cyclictest1985106-21latency_hist20:02:407
1874821994138,2cyclictest2505249-21kworker/u16:0+flush-8:023:57:414
1874821993836,2cyclictest1884239-21kworker/u16:0+flush-8:020:37:404
1874825993735,2cyclictest2147151-21kworker/u16:1+events_unbound21:41:065
1874825993735,2cyclictest1874389-21kworker/u16:2+events_unbound19:08:145
1874821993736,1cyclictest1864597-21kworker/u16:1+events_unbound19:07:554
1874825993634,2cyclictest2265245-21kworker/u16:1+events_unbound22:15:025
1874821993633,2cyclictest2543527-21kworker/u16:0+events_unbound00:17:424
1874825993533,2cyclictest2324757-21kworker/u16:0+events_unbound22:35:395
1874821993432,2cyclictest2265245-21kworker/u16:1+events_unbound22:58:584
1874821993432,2cyclictest2147151-21kworker/u16:1+events_unbound21:33:464
1874821993432,2cyclictest2147151-21kworker/u16:1+events_unbound21:33:464
1874821993432,2cyclictest2091665-21kworker/u16:2+flush-8:022:28:104
1874837993327,5cyclictest2243084-21latency_hist22:02:417
1874825993331,2cyclictest2543527-21kworker/u16:0+events_unbound00:18:115
1874825993331,2cyclictest2398701-21kworker/u16:3+events_unbound23:17:095
1874825993328,2cyclictest2147151-21kworker/u16:1+flush-8:021:52:405
22052642320,1chrt2205262-21ssh21:44:087
1874825993230,2cyclictest2519509-21kworker/u16:2+events_unbound23:59:415
1874825993230,2cyclictest2485002-21kworker/u16:3+events_unbound23:51:075
1874825993230,2cyclictest2423133-21kworker/u16:2+events_unbound23:43:475
1874825993230,2cyclictest2219124-21kworker/u16:4+flush-8:022:07:065
1874825993230,2cyclictest1884239-21kworker/u16:0+events_unbound19:33:055
1874825993229,2cyclictest2289732-21kworker/u16:0+events_unbound22:22:415
1874821993229,2cyclictest2528501-21kworker/u16:5+events_unbound00:02:414
187425523222,7sleep50-21swapper/519:03:415
1874825993129,2cyclictest2543527-21kworker/u16:0+events_unbound00:17:055
1874825993129,2cyclictest2543527-21kworker/u16:0+events_unbound00:17:055
1874825993129,2cyclictest2360807-21kworker/u16:3+events_unbound22:54:385
1874825993129,2cyclictest2360807-21kworker/u16:3+events_unbound22:54:385
1874825993129,2cyclictest2265245-21kworker/u16:1+events_unbound23:00:225
1874821993129,2cyclictest2485002-21kworker/u16:3+events_unbound23:55:414
1874821993129,2cyclictest2302247-21kworker/u16:3+events_unbound22:38:084
1874821993129,2cyclictest2219124-21kworker/u16:4+events_unbound22:08:124
1874821993129,2cyclictest2091665-21kworker/u16:2+events_unbound21:27:354
1874825993028,2cyclictest2528501-21kworker/u16:5+events_unbound00:11:175
1874825993028,2cyclictest2360807-21kworker/u16:3+events_unbound22:48:545
1874825993028,2cyclictest2324757-21kworker/u16:0+flush-8:022:40:025
1874825993028,2cyclictest2133103-21kworker/u16:0+events_unbound21:34:195
1874825993028,2cyclictest2133103-21kworker/u16:0+events_unbound21:34:195
1874825993028,2cyclictest2101452-21kworker/u16:3+events_unbound21:56:055
1874825993028,2cyclictest2091665-21kworker/u16:2+events_unbound22:18:395
1874825993028,2cyclictest2091665-21kworker/u16:2+events_unbound21:20:545
1874821993028,2cyclictest2485002-21kworker/u16:3+events_unbound23:49:274
1874821993028,2cyclictest2265245-21kworker/u16:1+flush-8:023:20:494
1874821993028,2cyclictest2091665-21kworker/u16:2+events_unbound21:09:514
1874821993028,2cyclictest2004446-21kworker/u16:2+events_unbound20:28:514
1874837992923,5cyclictest648-21systemd-journal19:12:407
1874825992927,2cyclictest2398701-21kworker/u16:3+flush-8:023:28:205
1874825992927,2cyclictest2373606-21kworker/u16:0+flush-8:023:05:385
1874821992927,2cyclictest2580481-21kworker/u16:1+events_unbound00:33:144
1874821992927,2cyclictest2423133-21kworker/u16:2+events_unbound23:40:504
1874821992927,2cyclictest2423133-21kworker/u16:2+events_unbound23:40:504
1874821992927,2cyclictest2289732-21kworker/u16:0+events_unbound22:22:434
1874825992826,2cyclictest2580481-21kworker/u16:1+events_unbound00:28:525
1874825992826,2cyclictest2519509-21kworker/u16:2+events_unbound00:07:325
1874825992826,2cyclictest2485002-21kworker/u16:3+events_unbound00:23:325
1874825992826,2cyclictest2423133-21kworker/u16:2+events_unbound23:19:265
1874825992826,2cyclictest2324757-21kworker/u16:0+events_unbound22:44:155
1874825992826,2cyclictest2081939-21kworker/u16:1+flush-8:021:10:265
1874825992826,2cyclictest1884239-21kworker/u16:0+events_unbound20:52:305
1874821992826,2cyclictest2543527-21kworker/u16:0+flush-8:000:17:394
1874821992826,2cyclictest2543527-21kworker/u16:0+flush-8:000:17:394
1874837992722,4cyclictest2291047-21latency_hist22:22:407
1874825992725,2cyclictest2265245-21kworker/u16:1+events_unbound23:53:345
1874825992725,2cyclictest2219124-21kworker/u16:4+events_unbound22:01:475
1874821992725,2cyclictest2543527-21kworker/u16:0+flush-8:000:12:224
1874821992725,2cyclictest2398701-21kworker/u16:3+events_unbound23:11:504
1874821992725,2cyclictest2373606-21kworker/u16:0+events_unbound23:12:434
1874821992725,2cyclictest2265245-21kworker/u16:1+events_unbound22:14:504
1874825992624,2cyclictest2603205-21kworker/u16:3+events_unbound00:33:415
1874825992624,2cyclictest2423133-21kworker/u16:2+events_unbound23:41:565
1874825992624,2cyclictest2423133-21kworker/u16:2+events_unbound23:41:565
1874825992624,2cyclictest2265245-21kworker/u16:1+events_unbound22:30:155
1874825992624,2cyclictest2219124-21kworker/u16:4+flush-8:022:08:065
1874825992624,2cyclictest2101452-21kworker/u16:3+events_unbound21:46:185
1874825992624,2cyclictest2101452-21kworker/u16:3+events_unbound21:28:375
1874825992624,2cyclictest2004446-21kworker/u16:2+events_unbound20:42:265
1874825992624,2cyclictest1926682-21kworker/u16:1+events_unbound19:56:115
187483799250,23cyclictest2123033-21latency_hist21:12:407
1874825992523,2cyclictest2423133-21kworker/u16:2+flush-8:023:24:355
1874825992523,2cyclictest2398701-21kworker/u16:3+events_unbound23:10:405
1874825992523,2cyclictest2091665-21kworker/u16:2+flush-8:021:23:455
1874825992523,2cyclictest1926682-21kworker/u16:1+events_unbound20:18:435
1874825992523,2cyclictest1884239-21kworker/u16:0+flush-8:019:23:265
1874825992523,2cyclictest1884239-21kworker/u16:0+events_unbound20:56:265
1874825992522,2cyclictest2081939-21kworker/u16:1+events_unbound20:57:505
1874825992522,2cyclictest2081939-21kworker/u16:1+events_unbound20:57:505
1874821992523,2cyclictest2580481-21kworker/u16:1+events_unbound00:29:494
1874821992523,2cyclictest2580481-21kworker/u16:1+events_unbound00:24:424
1874821992523,2cyclictest2485002-21kworker/u16:3+events_unbound23:45:064
1874821992523,2cyclictest2265245-21kworker/u16:1+events_unbound23:07:264
1874821992523,2cyclictest2101452-21kworker/u16:3+events_unbound21:39:424
1874821992523,2cyclictest2101452-21kworker/u16:3+events_unbound21:32:344
1874825992422,2cyclictest2423133-21kworker/u16:2+events_unbound23:34:405
1874825992422,2cyclictest2091665-21kworker/u16:2+flush-8:021:13:315
1874825992422,2cyclictest2091665-21kworker/u16:2+events_unbound21:04:275
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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