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2026-05-14 - 10:13
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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 Thu May 14, 2026 00:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23568202930,0sleep40-21swapper/421:25:204
207527625747,7sleep40-21swapper/419:06:594
2075664995654,2cyclictest2515600-21kworker/u16:3+events_unbound00:18:265
207511525242,7sleep50-21swapper/519:04:445
2075664994947,2cyclictest2515600-21kworker/u16:3+flush-8:023:28:345
20753252442,36sleep70-21swapper/719:07:427
2075669994035,3cyclictest2455312-21cat22:08:047
2075669993731,5cyclictest2564155-21latency_hist22:53:047
2075664993735,2cyclictest2263052-21kworker/u16:2+events_unbound22:14:145
2075664993634,2cyclictest2515600-21kworker/u16:3+events_unbound00:08:285
2075664993533,2cyclictest2635246-21kworker/u16:2+events_unbound23:42:265
2075664993533,2cyclictest2243078-21kworker/u16:3+events_unbound22:07:145
207513823525,7sleep60-21swapper/619:05:016
2075664993432,2cyclictest2252697-21kworker/u16:0+events_unbound22:46:175
2075664993431,2cyclictest2263052-21kworker/u16:2+flush-8:022:22:415
2075664993430,3cyclictest2252697-21kworker/u16:0+events_unbound23:20:255
2075664993331,2cyclictest2721968-21kworker/u16:4+events_unbound00:05:145
2075664993331,2cyclictest2515600-21kworker/u16:3+events_unbound23:56:255
2075664993331,2cyclictest2263052-21kworker/u16:2+flush-8:021:28:275
2075664993331,2cyclictest2252697-21kworker/u16:0+events_unbound21:54:475
2075664993230,2cyclictest2767567-21kworker/u16:0+events_unbound00:32:015
2075664993230,2cyclictest2721968-21kworker/u16:4+events_unbound00:01:025
2075664993230,2cyclictest2695355-21kworker/u16:1+events_unbound00:36:135
2075664993230,2cyclictest2552447-21kworker/u16:1+flush-8:022:54:265
2075664993230,2cyclictest2515600-21kworker/u16:3+events_unbound23:16:135
2075664993230,2cyclictest2465400-21kworker/u16:1+events_unbound22:12:135
2075664993230,2cyclictest2263052-21kworker/u16:2+events_unbound22:41:145
2075664993129,2cyclictest2263052-21kworker/u16:2+events_unbound21:38:015
2075664993028,2cyclictest2695355-21kworker/u16:1+flush-8:000:25:135
2075664993028,2cyclictest2552447-21kworker/u16:1+events_unbound22:52:465
2075657993028,2cyclictest2089300-21kworker/u16:0+events_unbound19:38:294
2075666992926,2cyclictest2089300-21kworker/u16:0+flush-8:020:03:306
2075664992927,2cyclictest2515600-21kworker/u16:3+events_unbound23:00:495
2075664992927,2cyclictest2465400-21kworker/u16:1+events_unbound22:25:135
2075664992927,2cyclictest2263052-21kworker/u16:2+flush-8:022:31:135
2075664992927,2cyclictest2252697-21kworker/u16:0+events_unbound23:10:025
2075664992927,2cyclictest2252697-21kworker/u16:0+events_unbound23:10:025
2075657992927,2cyclictest2515600-21kworker/u16:3+flush-8:023:58:254
2075669992826,1cyclictest0-21swapper/722:53:177
2075666992826,2cyclictest2552447-21kworker/u16:1+flush-8:022:48:296
2075664992826,2cyclictest2515600-21kworker/u16:3+flush-8:023:43:495
2075664992826,2cyclictest2515600-21kworker/u16:3+flush-8:022:34:175
2075664992826,2cyclictest2252697-21kworker/u16:0+flush-8:023:07:145
2075664992826,2cyclictest2252697-21kworker/u16:0+events_unbound23:28:025
2075664992826,2cyclictest2243078-21kworker/u16:3+events_unbound21:45:135
2075664992826,2cyclictest2243078-21kworker/u16:3+events_unbound21:45:135
2075664992826,2cyclictest2136643-21kworker/u16:3+events_unbound19:58:015
23494092270,0chrt0-21swapper/521:23:215
2075669992726,0cyclictest0-21swapper/700:01:287
2075664992725,2cyclictest2252697-21kworker/u16:0+events_unbound21:52:135
2075664992725,2cyclictest2252697-21kworker/u16:0+events_unbound21:15:135
2075664992724,2cyclictest2089300-21kworker/u16:0+flush-8:020:08:055
2075657992725,2cyclictest2767567-21kworker/u16:0+flush-8:000:28:324
2075669992623,2cyclictest2525357-21ssh22:33:337
2075664992624,2cyclictest2515600-21kworker/u16:3+events_unbound23:34:245
2075664992624,2cyclictest2263052-21kworker/u16:2+events_unbound21:09:025
2075657992622,3cyclictest2695355-21kworker/u16:1+flush-8:023:48:214
2075664992523,2cyclictest2263052-21kworker/u16:2+events_unbound21:40:065
2075664992523,2cyclictest2243078-21kworker/u16:3+events_unbound21:59:055
2075664992523,2cyclictest2243078-21kworker/u16:3+events_unbound21:22:425
2075657992522,2cyclictest2089300-21kworker/u16:0+flush-8:019:43:194
2075664992422,2cyclictest2635246-21kworker/u16:2+events_unbound23:51:105
2075664992422,2cyclictest2075406-21kworker/u16:1+events_unbound19:33:265
2075664992421,2cyclictest2515600-21kworker/u16:3+events_unbound00:15:385
2075669992322,0cyclictest0-21swapper/721:08:447
207566999230,21cyclictest2491486-21latency_hist22:23:037
2075664992321,2cyclictest2089300-21kworker/u16:0+events_unbound19:13:145
2075657992321,2cyclictest1992173-21kworker/u16:2+events_unbound19:28:294
2075664992220,2cyclictest2252697-21kworker/u16:0+events_unbound20:43:245
2075657992220,2cyclictest2252697-21kworker/u16:0+flush-8:020:56:304
2075669992115,5cyclictest635-21systemd-journal23:51:257
2075669992114,5cyclictest635-21systemd-journal00:38:037
2075664992119,2cyclictest2089300-21kworker/u16:0+events_unbound19:52:155
2075664992118,2cyclictest1992173-21kworker/u16:2+events_unbound19:08:075
2075657992119,2cyclictest2263052-21kworker/u16:2+events_unbound21:03:184
2075657992119,2cyclictest2263052-21kworker/u16:2+events_unbound21:03:184
2075657992119,2cyclictest2252697-21kworker/u16:0+flush-8:021:33:304
2075657992119,2cyclictest2089300-21kworker/u16:0+events_unbound19:18:174
2075666992016,4cyclictest2515600-21kworker/u16:3+flush-8:023:28:346
2075657992018,2cyclictest2515600-21kworker/u16:3+events_unbound22:43:274
207566999190,17cyclictest827-21dbus-daemon00:08:037
2075664991917,2cyclictest2185242-21kworker/u16:1+events_unbound20:29:155
2075669991817,0cyclictest0-21swapper/720:28:257
2075669991816,1cyclictest0-21swapper/700:23:207
207566999180,17cyclictest0-21swapper/721:18:287
2075664991817,1cyclictest2136643-21kworker/u16:3+events_unbound19:38:195
2075657991816,2cyclictest2252697-21kworker/u16:0+flush-8:022:53:294
2075657991816,2cyclictest2089300-21kworker/u16:0+flush-8:020:18:194
2075669991716,0cyclictest0-21swapper/723:13:177
2075669991714,2cyclictest1234-21snmpd21:33:297
2075669991714,2cyclictest0-21swapper/720:43:057
2075669991713,3cyclictest1234-21snmpd19:16:197
2075664991715,2cyclictest2185242-21kworker/u16:1+events_unbound20:05:155
2075664991715,2cyclictest2136643-21kworker/u16:3+flush-8:019:59:045
2075657991714,2cyclictest2136643-21kworker/u16:3+flush-8:020:13:204
207566999168,7cyclictest6895-21gmain20:13:257
2075669991615,0cyclictest0-21swapper/721:43:317
2075669991615,0cyclictest0-21swapper/721:43:317
2075669991614,1cyclictest0-21swapper/721:28:197
2075669991613,2cyclictest0-21swapper/723:08:047
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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