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2026-03-28 - 20:47
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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 Sat Mar 28, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
249756821420,1sleep60-21swapper/607:13:166
249756821420,1sleep60-21swapper/607:13:166
268840521010,1sleep72688407-21kthreadcore08:53:167
30389422950,0sleep50-21swapper/511:22:545
30274962600,0sleep73027494-21tr11:18:077
246689525948,7sleep50-21swapper/507:02:345
2467216995755,2cyclictest3148694-21kworker/u16:1+events_unbound12:13:284
2467216995653,2cyclictest3051053-21kworker/u16:4+events_unbound11:33:264
246662425646,7sleep60-21swapper/606:58:426
2467222995553,2cyclictest2759281-21kworker/u16:5+events_unbound09:30:506
2467222995452,2cyclictest3084856-21kworker/u16:0+events_unbound12:28:276
246685625442,7sleep40-21swapper/407:02:014
2467216995350,2cyclictest2927871-21kworker/u16:2+events_unbound10:48:294
2467222995250,2cyclictest2890948-21kworker/u16:3+flush-8:011:03:296
2467216995249,2cyclictest2927871-21kworker/u16:2+events_unbound11:28:274
2467216995249,2cyclictest2821846-21kworker/u16:0+flush-8:009:58:204
2467225995043,5cyclictest2509065-21latency_hist07:22:557
2467222995048,2cyclictest3148694-21kworker/u16:1+events_unbound12:13:246
2467222995048,2cyclictest2857670-21kworker/u16:2+flush-8:010:13:256
2467216995047,2cyclictest2927871-21kworker/u16:2+events_unbound11:13:244
2467222994947,2cyclictest2927871-21kworker/u16:2+events_unbound10:38:166
2467222994947,2cyclictest2773134-21kworker/u16:1+flush-8:009:48:206
2467216994947,2cyclictest2821846-21kworker/u16:0+flush-8:010:18:104
2467222994847,1cyclictest2890948-21kworker/u16:3+events_unbound11:23:286
2467216994846,2cyclictest2759281-21kworker/u16:5+events_unbound09:43:214
2467222994644,2cyclictest2890948-21kworker/u16:3+events_unbound10:53:076
2467216994644,2cyclictest2773134-21kworker/u16:1+events_unbound09:33:174
2467216994644,2cyclictest2537748-21kworker/u16:2+events_unbound09:25:534
2467216994644,2cyclictest2537748-21kworker/u16:2+events_unbound09:25:534
2467216994643,2cyclictest1488360-21kworker/u16:1+events_unbound07:03:104
2467225994541,2cyclictest3088481-21iostat11:43:097
2467216994543,2cyclictest2906247-21kworker/u16:0+events_unbound10:33:174
2467216994543,2cyclictest2759281-21kworker/u16:5+events_unbound10:13:094
2467216994542,2cyclictest2773134-21kworker/u16:1+events_unbound09:53:214
2467222994442,2cyclictest3051053-21kworker/u16:4+events_unbound11:33:286
2467222994442,2cyclictest2927871-21kworker/u16:2+events_unbound11:12:326
2467220994441,2cyclictest3051053-21kworker/u16:4+flush-8:011:47:495
2467216994442,2cyclictest3148694-21kworker/u16:1+flush-8:012:18:294
2467216994442,2cyclictest3084856-21kworker/u16:0+events_unbound11:44:174
2467216994442,2cyclictest2927871-21kworker/u16:2+events_unbound11:11:374
2467216994442,2cyclictest2773134-21kworker/u16:1+events_unbound09:48:374
2467222994341,2cyclictest3084856-21kworker/u16:0+events_unbound11:54:296
2467222994341,2cyclictest2966454-21kworker/u16:0+events_unbound11:02:326
2467222994341,2cyclictest2857670-21kworker/u16:2+events_unbound10:21:086
2467222994341,2cyclictest2671899-21kworker/u16:1+events_unbound09:17:336
2467216994341,2cyclictest3084856-21kworker/u16:0+events_unbound11:40:014
2467216994341,2cyclictest2890948-21kworker/u16:3+events_unbound11:55:044
2467216994340,2cyclictest2773134-21kworker/u16:1+events_unbound10:05:284
2467216994340,2cyclictest2661861-21kworker/u16:0+events_unbound09:11:184
2467225994240,1cyclictest3016002-21/usr/sbin/munin11:13:097
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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