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2026-06-19 - 07:15
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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 Fri Jun 19, 2026 00:43:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
16825625848,7sleep40-21swapper/419:06:474
16838324510,30sleep70-21swapper/719:08:347
16823924333,7sleep50-21swapper/519:06:325
16832623929,7sleep60-21swapper/619:07:456
168746993836,2cyclictest467460-21kworker/u16:3+flush-8:023:09:485
168743993634,2cyclictest858640-21kworker/u16:2+events_unbound00:15:084
168752993431,2cyclictest723895-21ssh23:19:487
168746993432,2cyclictest3494724-21kworker/u16:0+events_unbound19:15:095
168752993230,1cyclictest0-21swapper/700:20:097
168748993230,2cyclictest467460-21kworker/u16:3+events_unbound22:05:076
168743993230,2cyclictest797524-21kworker/u16:1+flush-8:000:09:484
168752993130,0cyclictest0-21swapper/719:35:097
168743993128,2cyclictest465138-21kworker/u16:2+events_unbound21:40:174
7094722300,0sleep465-21ksoftirqd/423:10:454
168746993028,2cyclictest467460-21kworker/u16:3+flush-8:022:04:495
168746993028,2cyclictest467460-21kworker/u16:3+flush-8:022:04:495
168743993027,2cyclictest338494-21kworker/u16:3+flush-8:021:19:484
6429692280,1chrt0-21swapper/422:45:134
168752992827,0cyclictest0-21swapper/722:10:207
168743992826,2cyclictest868306-21kworker/u16:3+events_unbound00:30:214
168743992826,2cyclictest467460-21kworker/u16:3+flush-8:022:05:194
168752992725,1cyclictest468744-21ssh21:35:097
168743992724,2cyclictest338494-21kworker/u16:3+flush-8:021:10:164
168752992622,3cyclictest884485-21irqcore00:25:117
168746992623,3cyclictest467460-21kworker/u16:3+events_unbound21:55:225
168746992623,3cyclictest467460-21kworker/u16:3+events_unbound21:55:225
168752992523,1cyclictest0-21swapper/719:10:147
168752992522,2cyclictest919549-21ssh00:39:487
168752992423,0cyclictest0-21swapper/722:00:177
168752992423,0cyclictest0-21swapper/722:00:177
168746992422,2cyclictest465138-21kworker/u16:2+flush-8:022:15:175
168746992420,3cyclictest882951-21latency_hist00:24:535
168743992422,2cyclictest3661377-21kworker/u16:2+events_unbound19:20:164
168752992322,0cyclictest0-21swapper/720:55:177
168748992321,2cyclictest348513-21kworker/u16:4+events_unbound21:30:126
168743992321,2cyclictest406649-21kworker/u16:0+events_unbound21:25:224
168743992320,2cyclictest773116-21kworker/u16:3+events_unbound23:40:054
168752992221,0cyclictest0-21swapper/721:10:087
168748992220,2cyclictest279821-21kworker/u16:2+events_unbound20:10:086
168746992221,1cyclictest588130-21kworker/u16:2+events_unbound22:25:015
168743992220,2cyclictest588130-21kworker/u16:2+events_unbound22:25:534
168743992220,2cyclictest443412-21kworker/u16:1+events_unbound21:45:074
168752992119,1cyclictest0-21swapper/723:39:547
168748992118,2cyclictest868306-21kworker/u16:3+flush-8:000:29:596
168746992119,2cyclictest443412-21kworker/u16:1+events_unbound21:35:225
168746992119,2cyclictest178562-21kworker/u16:4+flush-8:019:35:175
168743992120,1cyclictest907532-21kworker/u16:0+events_unbound00:38:254
168748992018,2cyclictest699874-21kworker/u16:0+flush-8:023:39:486
168748992017,2cyclictest178562-21kworker/u16:4+flush-8:019:40:206
168746992018,2cyclictest3494724-21kworker/u16:0+flush-8:020:55:235
168746992018,2cyclictest3494724-21kworker/u16:0+events_unbound20:05:175
168746992018,2cyclictest279821-21kworker/u16:2+flush-8:020:10:195
168746992018,2cyclictest178562-21kworker/u16:4+flush-8:019:30:225
168746992017,2cyclictest465138-21kworker/u16:2+flush-8:021:50:035
168743992019,1cyclictest465138-21kworker/u16:2+events_unbound21:53:004
168743992018,2cyclictest338494-21kworker/u16:3+events_unbound21:20:214
168743992017,2cyclictest3494724-21kworker/u16:0+flush-8:019:55:164
168752991917,1cyclictest699496-21turbostat23:09:537
168748991917,2cyclictest467460-21kworker/u16:3+flush-8:023:10:246
168748991915,3cyclictest269997-21awk19:59:546
168746991917,2cyclictest406649-21kworker/u16:0+flush-8:021:14:195
168743991917,2cyclictest178562-21kworker/u16:4+flush-8:019:25:204
168752991817,0cyclictest0-21swapper/720:30:167
168752991816,1cyclictest858857-21ssh00:14:567
168752991813,3cyclictest1278-21snmpd20:10:167
16875299180,17cyclictest501576-21sh21:45:237
168748991816,2cyclictest858640-21kworker/u16:2+events_unbound00:15:246
168748991816,2cyclictest672680-21kworker/u16:1+flush-8:022:59:496
168748991816,2cyclictest465138-21kworker/u16:2+flush-8:022:15:256
168748991813,4cyclictest613934-21latency_hist22:34:546
168743991816,2cyclictest338494-21kworker/u16:3+events_unbound20:55:264
168743991816,2cyclictest279821-21kworker/u16:2+events_unbound20:25:194
168743991815,2cyclictest760892-21kworker/u16:2+events_unbound23:49:554
168752991716,0cyclictest0-21swapper/721:55:237
168752991716,0cyclictest0-21swapper/721:55:237
168752991715,1cyclictest0-21swapper/720:54:537
16875299170,4cyclictest439803-21sh21:20:177
168748991715,2cyclictest443412-21kworker/u16:1+flush-8:021:45:216
168748991715,2cyclictest338494-21kworker/u16:3+flush-8:020:55:246
168752991615,0cyclictest0-21swapper/721:16:057
168752991615,0cyclictest0-21swapper/720:15:217
168752991614,1cyclictest0-21swapper/722:05:127
168752991613,2cyclictest5934-21gnome-shell22:24:037
16875299160,14cyclictest802958-21kthreadcore23:50:157
16875299160,14cyclictest0-21swapper/719:55:167
168748991612,3cyclictest723952-21awk23:19:536
168746991613,2cyclictest868306-21kworker/u16:3+events_unbound00:25:065
168743991614,2cyclictest467460-21kworker/u16:3+events_unbound22:35:284
168743991613,2cyclictest348513-21kworker/u16:4+flush-8:021:04:534
168752991513,1cyclictest0-21swapper/721:32:227
16875299150,1cyclictest0-21swapper/722:56:477
16875299150,1cyclictest0-21swapper/700:07:447
16875299150,14cyclictest0-21swapper/722:15:187
168748991513,2cyclictest406649-21kworker/u16:0+events_unbound21:15:116
168748991513,2cyclictest3494724-21kworker/u16:0+events_unbound19:10:086
168748991513,2cyclictest348513-21kworker/u16:4+events_unbound21:10:006
168748991513,2cyclictest231221-21kworker/u16:1+flush-8:020:00:246
16874899150,15cyclictest0-21swapper/623:45:556
168746991513,2cyclictest822165-21kworker/u16:4+flush-8:000:30:245
168746991513,2cyclictest465138-21kworker/u16:2+flush-8:021:45:245
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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