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2026-05-06 - 02:12
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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 May 06, 2026 00:43:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
415840925948,8sleep40-21swapper/419:05:164
41585072403,31sleep70-21swapper/719:06:397
414943024029,7sleep50-21swapper/519:03:485
4158943993836,2cyclictest3894294-21kworker/u16:2+flush-8:019:13:515
415834023523,8sleep60-21swapper/619:04:216
4158943993432,2cyclictest369796-21kworker/u16:0+events_unbound23:08:585
4158948993230,2cyclictest551527-21kworker/u16:1+flush-8:000:13:516
4158943993227,4cyclictest369796-21kworker/u16:0+flush-8:022:23:365
4158943993028,2cyclictest171525-21kworker/u16:1+flush-8:021:33:365
4158948992927,2cyclictest369796-21kworker/u16:0+events_unbound23:42:436
4158935992925,3cyclictest133907-21kworker/u16:3+events_unbound20:38:594
1175842290,1chrt0-21swapper/720:23:547
4158948992826,2cyclictest321346-21kworker/u16:4+events_unbound23:14:486
4158935992826,2cyclictest4139835-21kworker/u16:0+events_unbound19:09:034
4158948992725,2cyclictest4191822-21kworker/u16:1+events_unbound20:00:196
4158948992725,2cyclictest321346-21kworker/u16:4+events_unbound22:19:436
4158948992725,2cyclictest265507-21kworker/u16:3+flush-8:022:48:516
4158948992725,2cyclictest265507-21kworker/u16:3+flush-8:022:13:356
4158943992725,2cyclictest265507-21kworker/u16:3+flush-8:021:58:305
4158935992725,2cyclictest85075-21kworker/u16:0+flush-8:020:43:544
4158952992619,6cyclictest635-21systemd-journal23:48:367
4158948992624,2cyclictest501545-21kworker/u16:1+events_unbound23:19:276
4158948992624,2cyclictest4191822-21kworker/u16:1+flush-8:019:30:356
4158948992624,2cyclictest4086117-21kworker/u16:3+events_unbound19:45:396
4158943992624,2cyclictest265507-21kworker/u16:3+flush-8:022:48:505
4158952992518,6cyclictest369805-21latency_hist22:18:367
4158948992523,2cyclictest3894294-21kworker/u16:2+flush-8:019:25:076
4158948992523,2cyclictest321346-21kworker/u16:4+events_unbound22:02:396
4158948992523,2cyclictest133907-21kworker/u16:3+events_unbound20:47:116
4158935992523,2cyclictest321346-21kworker/u16:4+flush-8:022:53:524
4158952992418,5cyclictest635-21systemd-journal19:43:367
4158948992422,2cyclictest85075-21kworker/u16:0+events_unbound20:41:316
4158948992422,2cyclictest3894294-21kworker/u16:2+events_unbound19:17:026
4158948992422,2cyclictest369796-21kworker/u16:0+events_unbound22:59:006
4158948992422,2cyclictest265507-21kworker/u16:3+events_unbound22:08:136
4158948992422,2cyclictest171525-21kworker/u16:1+events_unbound21:32:576
4158948992422,2cyclictest171525-21kworker/u16:1+events_unbound21:05:436
4158948992422,2cyclictest113863-21kworker/u16:2+events_unbound21:14:426
4158948992422,2cyclictest113863-21kworker/u16:2+events_unbound21:01:076
4158948992321,2cyclictest4191822-21kworker/u16:1+flush-8:020:20:356
4158948992321,2cyclictest4191822-21kworker/u16:1+flush-8:019:42:116
4158948992321,2cyclictest3894294-21kworker/u16:2+flush-8:019:53:376
4158948992321,2cyclictest369796-21kworker/u16:0+events_unbound22:24:406
4158948992321,2cyclictest265507-21kworker/u16:3+events_unbound23:05:276
4158948992321,2cyclictest113863-21kworker/u16:2+events_unbound21:10:156
4158948992321,2cyclictest113863-21kworker/u16:2+events_unbound20:56:086
4158948992320,2cyclictest85075-21kworker/u16:0+events_unbound20:13:466
4158943992321,2cyclictest369796-21kworker/u16:0+events_unbound00:03:535
4158943992321,2cyclictest321346-21kworker/u16:4+flush-8:023:14:135
4158943992320,3cyclictest321346-21kworker/u16:4+flush-8:022:04:485
4158943992319,3cyclictest171525-21kworker/u16:1+flush-8:021:33:585
4158952992217,4cyclictest575774-21latency_hist23:43:367
4158952992217,4cyclictest103893-21latency_hist20:18:367
4158948992220,2cyclictest551527-21kworker/u16:1+events_unbound23:36:316
4158948992220,2cyclictest527339-21kworker/u16:2+events_unbound00:19:316
4158948992220,2cyclictest4139835-21kworker/u16:0+events_unbound19:09:206
4158948992220,2cyclictest4086117-21kworker/u16:3+events_unbound19:21:596
4158948992220,2cyclictest369796-21kworker/u16:0+flush-8:022:33:406
4158948992220,2cyclictest321346-21kworker/u16:4+events_unbound23:26:166
4158948992220,2cyclictest133907-21kworker/u16:3+events_unbound20:36:226
4158948992220,2cyclictest133907-21kworker/u16:3+events_unbound20:36:226
4158952992115,5cyclictest636335-21latency_hist00:08:357
4158948992119,2cyclictest85075-21kworker/u16:0+flush-8:020:12:546
4158948992119,2cyclictest4191822-21kworker/u16:1+events_unbound20:30:526
4158948992119,2cyclictest4191822-21kworker/u16:1+events_unbound20:06:466
4158948992119,2cyclictest4191822-21kworker/u16:1+events_unbound19:35:246
4158948992119,2cyclictest369796-21kworker/u16:0+events_unbound23:52:436
4158948992119,2cyclictest369796-21kworker/u16:0+events_unbound23:44:326
4158948992119,2cyclictest265507-21kworker/u16:3+events_unbound22:14:156
4158948992118,2cyclictest85075-21kworker/u16:0+events_unbound20:23:366
4158943992119,2cyclictest4191822-21kworker/u16:1+flush-8:019:53:515
4158943992119,2cyclictest265507-21kworker/u16:3+flush-8:021:49:135
4158943992118,2cyclictest85075-21kworker/u16:0+flush-8:020:33:515
4158943992118,2cyclictest85075-21kworker/u16:0+flush-8:020:33:515
4158952992014,5cyclictest65344-21latency_hist19:58:367
4158948992018,2cyclictest527339-21kworker/u16:2+flush-8:000:29:146
4158948992018,2cyclictest527339-21kworker/u16:2+events_unbound23:53:596
4158948992018,2cyclictest4191822-21kworker/u16:1+events_unbound19:51:126
4158948992018,2cyclictest113863-21kworker/u16:2+events_unbound21:44:236
4158948992017,2cyclictest551527-21kworker/u16:1+events_unbound00:03:416
4158943992018,2cyclictest369796-21kworker/u16:0+events_unbound22:38:585
4158943992018,2cyclictest369796-21kworker/u16:0+events_unbound22:38:585
4158943992018,2cyclictest321346-21kworker/u16:4+events_unbound22:33:515
4158935992018,2cyclictest171525-21kworker/u16:1+flush-8:021:14:154
4158935992017,2cyclictest4191822-21kworker/u16:1+flush-8:020:28:514
415895299190,17cyclictest330373-21ssh21:59:017
4158948991917,2cyclictest501545-21kworker/u16:1+events_unbound23:12:476
4158943991917,2cyclictest369796-21kworker/u16:0+events_unbound23:48:505
4158935991917,2cyclictest265507-21kworker/u16:3+events_unbound22:49:024
415895299189,8cyclictest0-21swapper/719:48:287
4158952991815,2cyclictest1234-21snmpd22:21:307
4158952991814,3cyclictest1234-21snmpd23:25:527
4158948991816,2cyclictest677651-21kworker/u16:0+flush-8:000:24:016
4158948991816,2cyclictest551527-21kworker/u16:1+flush-8:023:59:196
4158948991816,2cyclictest369796-21kworker/u16:0+events_unbound23:31:236
4158948991816,2cyclictest113863-21kworker/u16:2+events_unbound21:54:486
4158948991815,2cyclictest85075-21kworker/u16:0+events_unbound21:23:366
4158948991815,2cyclictest369796-21kworker/u16:0+events_unbound00:08:426
4158943991816,2cyclictest527339-21kworker/u16:2+flush-8:000:19:065
4158943991816,2cyclictest4086117-21kworker/u16:3+events_unbound19:19:015
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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