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2026-05-21 - 04:21
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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 May 21, 2026 00:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
290358825545,7sleep40-21swapper/419:07:104
290334324837,8sleep50-21swapper/519:03:425
290392399430,41cyclictest635-21systemd-journal21:27:367
290392399420,40cyclictest635-21systemd-journal19:12:367
2903918994238,3cyclictest3271601-21kworker/u16:4+flush-8:022:13:026
29034232415,31sleep70-21swapper/719:04:487
2903918993937,2cyclictest3138569-21kworker/u16:2+events_unbound21:20:476
2903918993937,2cyclictest2955773-21kworker/u16:1+events_unbound19:57:326
290392399360,34cyclictest3319635-21latency_hist22:22:367
2903918993634,2cyclictest3353046-21kworker/u16:1+events_unbound23:10:356
2903918993633,3cyclictest3138569-21kworker/u16:2+events_unbound21:14:476
2903923993529,5cyclictest3525289-21latency_hist23:47:357
2903918993533,2cyclictest3622004-21kworker/u16:3+events_unbound00:36:116
2903918993533,2cyclictest3500229-21kworker/u16:0+events_unbound00:11:476
2903918993533,2cyclictest3172112-21kworker/u16:0+events_unbound21:52:196
2903918993533,2cyclictest3172112-21kworker/u16:0+events_unbound21:52:196
2903918993533,2cyclictest3118815-21kworker/u16:1+events_unbound21:09:116
2903918993533,2cyclictest3118815-21kworker/u16:1+events_unbound21:09:116
2903918993532,2cyclictest3085307-21kworker/u16:0+events_unbound20:43:026
2903918993529,2cyclictest3353046-21kworker/u16:1+events_unbound22:52:286
2903923993429,4cyclictest3070893-21latency_hist20:32:367
2903918993432,2cyclictest3513147-21kworker/u16:2+events_unbound23:50:476
2903918993432,2cyclictest3513147-21kworker/u16:2+events_unbound00:23:276
2903913993432,2cyclictest3500229-21kworker/u16:0+flush-8:023:37:505
2903918993331,2cyclictest3513147-21kworker/u16:2+events_unbound23:47:316
2903918993331,2cyclictest3331985-21kworker/u16:3+events_unbound23:03:356
2903918993331,2cyclictest3051757-21kworker/u16:3+events_unbound20:47:556
2903918993230,2cyclictest3486546-21kworker/u16:1+events_unbound23:34:276
2903918993230,2cyclictest3172112-21kworker/u16:0+events_unbound22:02:366
2903918993229,2cyclictest3051757-21kworker/u16:3+events_unbound22:02:406
2903908993229,2cyclictest3353046-21kworker/u16:1+events_unbound22:47:514
2903918993129,2cyclictest3172112-21kworker/u16:0+events_unbound21:25:366
2903918993129,2cyclictest2955773-21kworker/u16:1+events_unbound19:42:316
2903918993129,2cyclictest2955773-21kworker/u16:1+events_unbound19:42:316
2903913993129,2cyclictest3089164-21kworker/u16:4+events_unbound20:58:055
2903918993028,2cyclictest3462507-21kworker/u16:4+flush-8:023:53:356
2903918993028,2cyclictest3462507-21kworker/u16:4+flush-8:023:53:356
2903918993028,2cyclictest3331985-21kworker/u16:3+events_unbound22:45:546
2903913993028,2cyclictest3462507-21kworker/u16:4+events_unbound00:12:505
2903918992927,2cyclictest3595614-21kworker/u16:1+events_unbound00:31:066
2903918992927,2cyclictest3452688-21kworker/u16:3+events_unbound23:22:206
2903918992927,2cyclictest3172112-21kworker/u16:0+events_unbound22:26:076
2903918992927,2cyclictest3138569-21kworker/u16:2+events_unbound21:28:466
2903918992927,2cyclictest2639756-21kworker/u16:2+events_unbound19:19:476
2903918992926,2cyclictest3317914-21kworker/u16:2+flush-8:022:57:386
2903913992927,2cyclictest3172112-21kworker/u16:0+events_unbound22:16:315
290348522919,7sleep60-21swapper/619:05:436
32107042280,1chrt3210705-21ssh21:37:367
2903918992826,2cyclictest3595614-21kworker/u16:1+events_unbound00:17:026
2903918992826,2cyclictest3513147-21kworker/u16:2+events_unbound00:19:076
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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