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2026-03-12 - 21:39
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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 Mar 12, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32969352660,1sleep73296937-21ssh11:53:397
2655427995554,0cyclictest0-21swapper/712:04:247
2655410995146,2cyclictest3062258-21kworker/u16:3+events_unbound10:21:564
265509125141,7sleep50-21swapper/507:03:295
2655427995045,4cyclictest3345109-21latency_hist12:13:577
265508324939,7sleep60-21swapper/607:03:226
2655410994542,2cyclictest3117214-21kworker/u16:2+events_unbound11:31:274
2655427994443,0cyclictest0-21swapper/709:11:047
2655427994438,4cyclictest3152843-21latency_hist10:53:587
2655410994341,2cyclictest2984699-21kworker/u16:1+events_unbound10:06:164
2655427994241,0cyclictest0-21swapper/710:01:357
2655410994240,2cyclictest3142267-21kworker/u16:6+events_unbound11:40:284
2655410994240,2cyclictest2602101-21kworker/u16:0+events_unbound10:32:434
2655427994140,0cyclictest0-21swapper/710:37:527
2655410994139,2cyclictest3298844-21kworker/u16:0+events_unbound12:00:404
2655410994139,2cyclictest3262690-21kworker/u16:0+events_unbound11:46:084
2655410994139,2cyclictest3142267-21kworker/u16:6+events_unbound11:24:484
2655410994139,2cyclictest2879239-21kworker/u16:2+events_unbound10:11:484
264602324131,7sleep40-21swapper/406:59:034
2655427994039,0cyclictest0-21swapper/709:15:537
2655410994038,2cyclictest3298844-21kworker/u16:0+events_unbound12:30:084
2655410994038,2cyclictest3298844-21kworker/u16:0+events_unbound12:15:354
2655410994038,2cyclictest3298844-21kworker/u16:0+events_unbound11:56:284
2655410994038,2cyclictest3285089-21kworker/u16:2+events_unbound12:25:274
2655410994038,2cyclictest3142267-21kworker/u16:6+events_unbound11:15:314
2655410994038,2cyclictest3128873-21kworker/u16:5+events_unbound12:10:284
2655410994038,2cyclictest2984699-21kworker/u16:1+events_unbound10:36:574
2655410994038,2cyclictest2984699-21kworker/u16:1+events_unbound10:27:154
2655410994038,2cyclictest2984699-21kworker/u16:1+events_unbound10:02:514
2655410994038,2cyclictest2984699-21kworker/u16:1+events_unbound09:58:394
2655410994038,2cyclictest2679986-21kworker/u16:3+flush-8:007:23:584
2655410994038,2cyclictest2602101-21kworker/u16:0+events_unbound09:08:044
26548572406,30sleep70-21swapper/707:00:107
265542799390,38cyclictest3357139-21latency_hist12:18:587
2655414993936,2cyclictest2602101-21kworker/u16:0+events_unbound09:59:125
2655410993937,2cyclictest3285089-21kworker/u16:2+events_unbound12:21:484
2655410993937,2cyclictest2984699-21kworker/u16:1+events_unbound09:50:404
2655410993937,2cyclictest2879239-21kworker/u16:2+events_unbound09:13:444
2655410993937,2cyclictest2812122-21kworker/u16:3+events_unbound09:25:204
2655427993837,0cyclictest0-21swapper/709:42:377
2655410993836,2cyclictest3285089-21kworker/u16:2+events_unbound12:05:484
2655410993836,2cyclictest3128873-21kworker/u16:5+events_unbound11:22:354
2655410993836,2cyclictest3117214-21kworker/u16:2+flush-8:010:55:204
2655410993836,2cyclictest3117214-21kworker/u16:2+events_unbound11:11:564
2655410993836,2cyclictest3117214-21kworker/u16:2+events_unbound10:59:454
2655410993836,2cyclictest3117214-21kworker/u16:2+events_unbound10:41:354
2655410993836,2cyclictest3062258-21kworker/u16:3+events_unbound10:14:444
2655410993836,2cyclictest2879239-21kworker/u16:2+events_unbound09:18:374
2655410993836,2cyclictest2602101-21kworker/u16:0+events_unbound09:43:364
2655410993836,2cyclictest2602101-21kworker/u16:0+events_unbound09:30:194
2655419993733,3cyclictest3298844-21kworker/u16:0+flush-8:011:54:156
2655410993735,2cyclictest3128873-21kworker/u16:5+events_unbound11:50:534
2655410993735,2cyclictest3128873-21kworker/u16:5+events_unbound11:36:204
2655410993735,2cyclictest3117214-21kworker/u16:2+events_unbound10:47:234
2655427993635,0cyclictest0-21swapper/711:05:317
2655427993635,0cyclictest0-21swapper/710:41:277
2655427993635,0cyclictest0-21swapper/710:21:077
265542799360,34cyclictest2745066-21latency_hist07:48:597
2655414993532,2cyclictest3117214-21kworker/u16:2+flush-8:010:43:585
2655410993533,2cyclictest3117214-21kworker/u16:2+events_unbound10:52:594
2655410993533,2cyclictest2812122-21kworker/u16:3+events_unbound09:47:564
2655410993533,2cyclictest2602101-21kworker/u16:0+events_unbound09:36:244
2655410993533,2cyclictest2602101-21kworker/u16:0+events_unbound09:36:244
2655410993533,2cyclictest2602101-21kworker/u16:0+events_unbound09:23:404
2655410993532,2cyclictest2744740-21kworker/u16:2+events_unbound08:14:004
2655427993433,0cyclictest0-21swapper/712:33:477
2655427993427,1cyclictest0-21swapper/709:45:497
2655427993330,2cyclictest3259631-21ssh11:36:267
2655419993330,2cyclictest3354281-21kworker/u16:3+flush-8:012:19:126
2655414993330,2cyclictest2984699-21kworker/u16:1+events_unbound10:29:125
2655414993229,2cyclictest3142267-21kworker/u16:6+flush-8:010:54:035
2655410993230,2cyclictest3117214-21kworker/u16:2+events_unbound11:05:474
2655410993230,2cyclictest2602101-21kworker/u16:0+events_unbound08:29:284
265542799310,30cyclictest5417-21sshd09:21:197
2655419993128,2cyclictest2602101-21kworker/u16:0+events_unbound10:24:196
2655414993129,2cyclictest2879239-21kworker/u16:2+events_unbound09:49:125
2655410993129,2cyclictest2602101-21kworker/u16:0+events_unbound08:36:204
2655419993028,2cyclictest3142267-21kworker/u16:6+flush-8:011:39:346
2655410993027,2cyclictest2744740-21kworker/u16:2+events_unbound07:54:004
2655427992929,0cyclictest0-21swapper/712:27:387
2655427992928,0cyclictest0-21swapper/708:48:207
2655427992923,5cyclictest2706865-21latency_hist07:28:587
2655419992927,2cyclictest2869122-21kworker/u16:1+flush-8:008:58:586
2655414992926,2cyclictest3298844-21kworker/u16:0+events_unbound12:29:125
2655427992828,0cyclictest0-21swapper/711:01:447
2655427992828,0cyclictest0-21swapper/709:32:227
2655427992827,0cyclictest0-21swapper/709:25:267
2655427992821,5cyclictest650-21systemd-journal09:03:587
2655410992826,2cyclictest2812122-21kworker/u16:3+events_unbound08:53:094
2655410992826,2cyclictest2744740-21kworker/u16:2+events_unbound07:46:194
2655427992727,0cyclictest0-21swapper/711:30:147
2655414992725,2cyclictest2984699-21kworker/u16:1+flush-8:010:34:215
2655410992725,2cyclictest2602101-21kworker/u16:0+events_unbound08:28:204
2655410992725,2cyclictest2602101-21kworker/u16:0+events_unbound08:04:084
2655427992625,0cyclictest0-21swapper/707:13:297
2655414992624,2cyclictest3128873-21kworker/u16:5+flush-8:011:49:085
2655414992623,2cyclictest3117214-21kworker/u16:2+flush-8:011:24:215
2655414992623,2cyclictest3117214-21kworker/u16:2+events_unbound11:34:135
2655427992525,0cyclictest0-21swapper/710:07:547
2655414992522,2cyclictest3128873-21kworker/u16:5+events_unbound11:54:115
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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