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2026-04-18 - 14:24
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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 Sat Apr 18, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25924725847,7sleep40-21swapper/407:04:534
268696995143,7cyclictest444655-21latency_hist08:39:457
26830425039,8sleep50-21swapper/507:08:315
268696994638,7cyclictest514401-21latency_hist09:14:467
268696994436,7cyclictest735126-21latency_hist10:44:457
2600672413,32sleep70-21swapper/707:05:047
268683993835,2cyclictest597938-21kworker/u16:2+flush-8:009:59:454
268693993735,2cyclictest992248-21kworker/u16:0+events_unbound12:39:116
268693993735,2cyclictest879548-21kworker/u16:1+events_unbound12:05:466
268693993735,2cyclictest879548-21kworker/u16:1+events_unbound11:48:126
268693993634,2cyclictest820902-21kworker/u16:4+events_unbound12:33:276
268693993634,2cyclictest747484-21kworker/u16:2+events_unbound11:26:396
268693993634,2cyclictest747484-21kworker/u16:2+events_unbound11:20:356
268693993634,2cyclictest609205-21kworker/u16:3+events_unbound11:07:006
268693993634,2cyclictest609205-21kworker/u16:3+events_unbound10:51:596
268693993634,2cyclictest609205-21kworker/u16:3+events_unbound10:42:236
268693993634,2cyclictest387533-21kworker/u16:0+events_unbound09:36:436
268693993634,2cyclictest387533-21kworker/u16:0+events_unbound09:36:436
268693993533,2cyclictest955706-21kworker/u16:3+events_unbound12:28:476
268693993533,2cyclictest952910-21kworker/u16:2+events_unbound12:14:266
268693993533,2cyclictest820902-21kworker/u16:4+events_unbound12:18:556
268693993533,2cyclictest820902-21kworker/u16:4+events_unbound11:37:596
268693993533,2cyclictest820902-21kworker/u16:4+events_unbound11:33:396
268693993533,2cyclictest724732-21kworker/u16:0+events_unbound11:14:106
268693993533,2cyclictest674058-21kworker/u16:1+events_unbound10:37:006
268693993533,2cyclictest674058-21kworker/u16:1+events_unbound10:33:396
268693993533,2cyclictest435451-21kworker/u16:1+events_unbound09:29:316
268693993533,2cyclictest435451-21kworker/u16:1+events_unbound09:14:466
268696993430,3cyclictest6946-21fwupd10:00:487
268693993432,2cyclictest820902-21kworker/u16:4+events_unbound11:59:036
268693993432,2cyclictest820902-21kworker/u16:4+events_unbound11:41:516
268693993432,2cyclictest820902-21kworker/u16:4+events_unbound11:41:516
268693993432,2cyclictest747484-21kworker/u16:2+events_unbound11:53:076
268693993432,2cyclictest597938-21kworker/u16:2+events_unbound10:09:196
268693993431,2cyclictest387533-21kworker/u16:0+events_unbound08:24:486
2682962349,8sleep60-21swapper/607:08:246
268693993331,2cyclictest747484-21kworker/u16:2+events_unbound11:17:356
268693993331,2cyclictest724732-21kworker/u16:0+events_unbound10:47:396
268693993331,2cyclictest597938-21kworker/u16:2+events_unbound10:19:236
268693993331,2cyclictest597938-21kworker/u16:2+events_unbound10:19:236
268693993331,2cyclictest597938-21kworker/u16:2+events_unbound09:48:406
268693993230,2cyclictest955706-21kworker/u16:3+events_unbound12:21:516
268693993230,2cyclictest955706-21kworker/u16:3+events_unbound12:21:516
268693993230,2cyclictest820902-21kworker/u16:4+flush-8:012:00:426
268693993230,2cyclictest724732-21kworker/u16:0+flush-8:010:55:236
268693993230,2cyclictest539023-21kworker/u16:4+events_unbound09:57:086
268693993230,2cyclictest483066-21kworker/u16:2+events_unbound09:14:246
268693993230,2cyclictest435451-21kworker/u16:1+events_unbound09:51:366
268693993230,2cyclictest435451-21kworker/u16:1+events_unbound09:22:356
268693993230,2cyclictest387533-21kworker/u16:0+events_unbound09:44:286
268693993129,2cyclictest609205-21kworker/u16:3+events_unbound10:20:476
268693993128,2cyclictest329946-21kworker/u16:1+events_unbound07:39:476
268693993028,2cyclictest724732-21kworker/u16:0+events_unbound11:02:036
268693993028,2cyclictest609205-21kworker/u16:3+events_unbound10:28:156
268693993028,2cyclictest597938-21kworker/u16:2+events_unbound10:03:316
268693993028,2cyclictest435451-21kworker/u16:1+events_unbound09:06:476
268693993028,2cyclictest387533-21kworker/u16:0+events_unbound09:31:466
268693993028,2cyclictest278182-21kworker/u16:0+events_unbound07:27:486
268693992926,2cyclictest256257-21kworker/u16:4+events_unbound07:19:556
268693992926,2cyclictest256257-21kworker/u16:4+events_unbound07:19:556
268683992826,2cyclictest820902-21kworker/u16:4+events_unbound11:34:594
268683992825,2cyclictest609205-21kworker/u16:3+flush-8:011:05:024
268693992725,2cyclictest387533-21kworker/u16:0+events_unbound08:15:566
268683992724,2cyclictest256257-21kworker/u16:4+flush-8:007:25:044
268683992624,2cyclictest539023-21kworker/u16:4+flush-8:009:45:104
268696992520,4cyclictest563458-21latency_hist09:34:457
268693992523,2cyclictest3745393-21kworker/u16:1+events_unbound07:10:566
268693992523,2cyclictest278182-21kworker/u16:0+flush-8:007:38:476
268683992523,2cyclictest609205-21kworker/u16:3+events_unbound10:30:004
268683992522,2cyclictest952910-21kworker/u16:2+flush-8:012:24:404
268683992522,2cyclictest952910-21kworker/u16:2+flush-8:012:24:404
268693992422,2cyclictest609205-21kworker/u16:3+events_unbound10:14:346
268693992422,2cyclictest454433-21kworker/u16:3+events_unbound09:03:556
268693992422,2cyclictest387533-21kworker/u16:0+events_unbound08:21:486
268696992317,5cyclictest368001-21latency_hist07:59:457
268693992321,2cyclictest376632-21kworker/u16:2+events_unbound08:05:476
268683992321,2cyclictest674058-21kworker/u16:1+events_unbound10:39:584
268696992217,4cyclictest635-21systemd-journal11:54:457
268693992220,2cyclictest425397-21kworker/u16:2+events_unbound08:34:076
268683992218,3cyclictest483066-21kworker/u16:2+events_unbound09:24:574
268693992119,2cyclictest387533-21kworker/u16:0+events_unbound08:54:486
268693992119,2cyclictest278182-21kworker/u16:0+events_unbound07:50:076
268683992119,2cyclictest879548-21kworker/u16:1+events_unbound11:54:594
268683992118,2cyclictest724732-21kworker/u16:0+flush-8:011:01:524
268696992013,6cyclictest796323-21latency_hist11:09:457
268683992018,2cyclictest387533-21kworker/u16:0+flush-8:008:24:454
268693991917,2cyclictest256257-21kworker/u16:4+events_unbound07:32:166
268683991916,2cyclictest483066-21kworker/u16:2+flush-8:009:14:554
268696991814,3cyclictest1234-21snmpd09:00:227
26869699181,2cyclictest682952-21ssh10:20:087
268696991810,7cyclictest759600-21latency_hist10:54:457
268693991816,2cyclictest435451-21kworker/u16:1+events_unbound08:47:556
268683991815,2cyclictest674058-21kworker/u16:1+flush-8:010:25:024
26868399180,17cyclictest607493-21kthreadcore09:50:074
26869699171,14cyclictest844939-21ssh11:29:047
26869699170,1cyclictest0-21swapper/710:15:107
26869699170,1cyclictest0-21swapper/710:15:107
268693991715,2cyclictest329946-21kworker/u16:1+events_unbound07:46:166
26869399170,3cyclictest359008-21cpuspeed_turbos07:54:576
268688991716,1cyclictest609205-21kworker/u16:3+flush-8:010:49:455
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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