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2026-04-29 - 08:22
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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 Apr 29, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1178121480,1sleep711779-21ssh23:22:217
415875321000,1sleep50-21swapper/523:04:165
3645577995148,2cyclictest3735723-21ps19:51:537
3645577994642,3cyclictest3754526-21ps19:59:317
3645566994440,3cyclictest97777-21kworker/u16:2+flush-8:000:19:204
3645566994440,3cyclictest97777-21kworker/u16:2+flush-8:000:04:214
3645566994241,1cyclictest3870113-21kworker/u16:1+events_unbound22:14:314
364507924232,7sleep50-21swapper/519:06:175
3645570994038,2cyclictest3697209-21kworker/u16:4+events_unbound19:41:395
3645566994038,2cyclictest73321-21kworker/u16:4+events_unbound00:29:204
3645566994037,2cyclictest3913766-21kworker/u16:2+flush-8:021:29:214
36450992403,31sleep70-21swapper/719:06:357
364516223814,7sleep40-21swapper/419:07:294
3645566993735,2cyclictest3913766-21kworker/u16:2+flush-8:021:39:334
3645572993634,1cyclictest3870113-21kworker/u16:1+flush-8:021:09:376
3645566993634,2cyclictest3870113-21kworker/u16:1+flush-8:022:19:294
3645577993429,4cyclictest61052-21latency_hist23:44:037
3645566993128,2cyclictest21459-21kworker/u16:0+flush-8:023:39:224
3645566992724,3cyclictest4182061-21kworker/u16:2+flush-8:023:21:494
3645577992624,1cyclictest0-21swapper/719:14:227
3645566992624,2cyclictest4133719-21kworker/u16:3+flush-8:023:09:224
3645566992624,2cyclictest3859768-21kworker/u16:3+flush-8:021:14:044
3645566992624,2cyclictest21459-21kworker/u16:0+flush-8:023:57:094
363612622616,7sleep60-21swapper/619:04:106
3645577992524,0cyclictest0-21swapper/719:13:257
3645577992523,1cyclictest3916565-21ssh21:24:117
3645577992419,4cyclictest4194104-21latency_hist23:19:037
3645572992422,2cyclictest3354620-21kworker/u16:1+flush-8:019:19:296
3645566992422,2cyclictest73321-21kworker/u16:4+flush-8:023:49:324
3645566992422,2cyclictest4073320-21kworker/u16:2+flush-8:022:29:344
3645566992422,2cyclictest132927-21kworker/u16:0+events_unbound00:16:534
3645577992322,0cyclictest0-21swapper/720:49:327
3645577992321,1cyclictest0-21swapper/722:04:117
3645566992321,2cyclictest4145877-21kworker/u16:4+flush-8:023:24:294
3645566992321,2cyclictest4145877-21kworker/u16:4+flush-8:023:24:294
3645566992320,2cyclictest4133719-21kworker/u16:3+flush-8:023:04:044
1943142230,1sleep40-21swapper/400:39:044
3645566992220,2cyclictest4109561-21kworker/u16:0+flush-8:022:49:344
1541452220,1sleep7154146-21tr00:19:277
3645577992117,3cyclictest124-21kswapd022:29:317
3645566992119,2cyclictest3697209-21kworker/u16:4+flush-8:019:34:254
3645572992017,2cyclictest3870113-21kworker/u16:1+flush-8:021:19:086
3645566992018,2cyclictest3697209-21kworker/u16:4+flush-8:020:09:234
3645566992018,2cyclictest3653998-21kworker/u16:3+events_unbound19:29:254
3645577991918,0cyclictest0-21swapper/719:46:567
3645577991915,3cyclictest1234-21snmpd00:00:587
3645577991913,4cyclictest635-21systemd-journal19:41:377
3645566991917,2cyclictest4145877-21kworker/u16:4+flush-8:023:14:334
3645566991917,2cyclictest4095245-21kworker/u16:1+flush-8:022:44:284
3645566991917,2cyclictest4095245-21kworker/u16:1+flush-8:022:44:284
3645566991917,2cyclictest3870113-21kworker/u16:1+events_unbound21:20:134
3645577991817,0cyclictest0-21swapper/720:22:077
3645577991817,0cyclictest0-21swapper/719:57:007
3645577991817,0cyclictest0-21swapper/719:57:007
3645577991816,1cyclictest0-21swapper/719:24:297
3645577991813,4cyclictest48965-21latency_hist23:39:037
3645566991816,2cyclictest3901672-21kworker/u16:0+events_unbound21:39:034
3645566991816,2cyclictest3774538-21kworker/u16:2+events_unbound20:29:244
3645566991816,2cyclictest3646301-21kworker/u16:2+flush-8:019:14:194
3645566991815,2cyclictest97828-21kworker/u16:3+flush-8:000:09:064
3645577991716,0cyclictest0-21swapper/723:49:437
3645577991716,0cyclictest0-21swapper/722:59:477
3645577991715,1cyclictest132835-21ssh00:12:317
3645577991712,4cyclictest3881260-21cat21:09:217
3645566991715,2cyclictest4182061-21kworker/u16:2+events_unbound23:36:144
3645566991715,2cyclictest4145877-21kworker/u16:4+events_unbound22:59:224
3645566991715,2cyclictest3754992-21kworker/u16:0+flush-8:020:14:254
3645566991714,2cyclictest132927-21kworker/u16:0+flush-8:000:24:084
3645577991615,0cyclictest0-21swapper/721:01:087
3645577991615,0cyclictest0-21swapper/720:24:237
3645577991613,2cyclictest0-21swapper/721:59:037
3645577991612,3cyclictest73132-21latency_hist23:49:047
3645577991612,2cyclictest1172-21tuned19:29:307
3645566991614,2cyclictest4073320-21kworker/u16:2+events_unbound22:34:174
3645566991614,2cyclictest3940431-21kworker/u16:4+events_unbound22:07:134
3645566991614,2cyclictest3870113-21kworker/u16:1+events_unbound21:24:334
3645566991614,2cyclictest3859768-21kworker/u16:3+events_unbound21:17:134
3645566991614,2cyclictest3697209-21kworker/u16:4+flush-8:019:59:254
3645566991614,2cyclictest21459-21kworker/u16:0+flush-8:023:47:054
3645577991514,0cyclictest0-21swapper/720:34:247
3645577991514,0cyclictest0-21swapper/720:12:207
3645577991514,0cyclictest0-21swapper/720:06:407
3645577991512,2cyclictest4036622-21ssh22:13:137
3645577991511,3cyclictest1234-21snmpd21:44:367
3645570991512,3cyclictest0-21swapper/523:16:535
364557099150,1cyclictest0-21swapper/521:34:245
3645566991513,2cyclictest3974162-21kworker/u16:0+flush-8:021:49:294
3645566991513,2cyclictest3974162-21kworker/u16:0+events_unbound22:28:434
3645566991513,2cyclictest3974162-21kworker/u16:0+events_unbound21:59:144
3645572991413,1cyclictest0-21swapper/623:44:476
3645572991413,1cyclictest0-21swapper/622:01:216
3645572991413,1cyclictest0-21swapper/600:37:266
364557299140,1cyclictest0-21swapper/623:07:166
364557299140,1cyclictest0-21swapper/600:02:556
364557299140,14cyclictest0-21swapper/623:24:086
364557299140,14cyclictest0-21swapper/623:24:086
364557299140,14cyclictest0-21swapper/621:35:306
3645570991413,1cyclictest0-21swapper/523:47:375
3645570991413,1cyclictest0-21swapper/522:09:245
3645570991413,1cyclictest0-21swapper/519:34:255
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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