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2026-04-02 - 22:14
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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 50 highest latencies:
System rack0slot2.osadl.org (updated Thu Apr 02, 2026 12:43:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24071126454,7sleep40-21swapper/407:00:294
241137995553,2cyclictest760194-21kworker/u16:3+events_unbound11:25:444
24056325544,8sleep60-21swapper/606:58:226
241137995351,2cyclictest798301-21kworker/u16:2+events_unbound11:38:084
241137995350,2cyclictest530074-21kworker/u16:0+events_unbound11:17:574
241140995250,2cyclictest920574-21kworker/u16:1+events_unbound12:28:085
24057325242,7sleep50-21swapper/506:58:295
241140995148,2cyclictest653136-21kworker/u16:2+flush-8:010:57:505
241140995047,2cyclictest598069-21kworker/u16:1+events_unbound11:02:505
241140995047,2cyclictest531798-21kworker/u16:3+flush-8:010:32:495
241137995047,2cyclictest772362-21kworker/u16:1+flush-8:011:28:054
241137995047,2cyclictest653136-21kworker/u16:2+events_unbound10:42:504
241140994947,2cyclictest817762-21kworker/u16:4+events_unbound11:57:515
241142994845,2cyclictest530074-21kworker/u16:0+flush-8:010:17:356
241137994846,2cyclictest760194-21kworker/u16:3+flush-8:011:32:504
241137994846,2cyclictest480854-21kworker/u16:2+events_unbound09:26:084
241140994745,2cyclictest530074-21kworker/u16:0+events_unbound10:43:085
241140994745,2cyclictest530074-21kworker/u16:0+events_unbound10:13:085
241137994745,2cyclictest598069-21kworker/u16:1+events_unbound10:23:374
241137994744,2cyclictest653136-21kworker/u16:2+flush-8:010:47:524
241140994644,2cyclictest835497-21kworker/u16:2+events_unbound12:25:165
241140994644,2cyclictest817762-21kworker/u16:4+flush-8:012:03:025
241140994643,2cyclictest835497-21kworker/u16:2+events_unbound12:07:475
24114699450,43cyclictest650-21systemd-journal09:02:357
241142994542,2cyclictest598069-21kworker/u16:1+flush-8:011:12:346
241140994543,2cyclictest760194-21kworker/u16:3+events_unbound11:24:005
241140994543,2cyclictest598069-21kworker/u16:1+events_unbound10:23:025
241137994543,2cyclictest772362-21kworker/u16:1+events_unbound11:53:054
241137994543,2cyclictest772362-21kworker/u16:1+events_unbound11:53:054
241137994543,2cyclictest480854-21kworker/u16:2+events_unbound09:57:364
241137994542,2cyclictest772362-21kworker/u16:1+events_unbound11:46:314
241146994439,4cyclictest519227-21latency_hist09:42:357
241142994441,3cyclictest817762-21kworker/u16:4+flush-8:012:18:016
241140994442,2cyclictest798301-21kworker/u16:2+events_unbound11:37:005
241140994442,2cyclictest784822-21kworker/u16:0+events_unbound11:54:085
241140994442,2cyclictest784822-21kworker/u16:0+events_unbound11:54:085
241140994442,2cyclictest653136-21kworker/u16:2+events_unbound11:14:325
241140994442,2cyclictest653136-21kworker/u16:2+events_unbound11:14:325
241137994442,2cyclictest495265-21kworker/u16:1+events_unbound09:56:374
241140994341,2cyclictest835497-21kworker/u16:2+events_unbound12:14:085
241140994341,2cyclictest480854-21kworker/u16:2+events_unbound09:53:575
241140994341,2cyclictest364068-21kworker/u16:0+events_unbound09:14:105
24114699420,40cyclictest266315-21sh07:27:367
241140994240,2cyclictest817762-21kworker/u16:4+events_unbound11:50:455
241140994240,2cyclictest772362-21kworker/u16:1+flush-8:011:37:595
241140994240,2cyclictest653136-21kworker/u16:2+events_unbound10:49:405
241140994240,2cyclictest530074-21kworker/u16:0+events_unbound11:20:255
241140994240,2cyclictest530074-21kworker/u16:0+events_unbound11:09:095
241137994240,2cyclictest835497-21kworker/u16:2+events_unbound12:21:124
241137994240,2cyclictest653136-21kworker/u16:2+events_unbound10:52:564
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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