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2026-06-12 - 13:58
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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 Fri Jun 12, 2026 12:43:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6524812960,1sleep7652483-21tr08:21:257
11326082560,0sleep71132609-21ssh11:50:507
501810994745,1cyclictest620634-21kworker/u16:2+flush-8:012:06:065
628089450,37rtkit-daemon0-21swapper/407:02:424
501816994438,5cyclictest649343-21latency_hist08:21:067
5013362435,32sleep70-21swapper/707:03:377
50146624232,7sleep50-21swapper/507:05:285
501816993837,0cyclictest0-21swapper/708:36:067
501810993735,1cyclictest879924-21kworker/u16:1+flush-8:010:16:065
501802993735,2cyclictest856249-21kworker/u16:3+events_unbound10:46:344
501802993734,2cyclictest581875-21kworker/u16:1+flush-8:009:16:294
501810993533,2cyclictest879924-21kworker/u16:1+events_unbound10:21:295
501810993428,5cyclictest716605-21kworker/u16:4+flush-8:009:06:325
501816993327,5cyclictest591823-21latency_hist07:51:077
501802993331,2cyclictest620634-21kworker/u16:2+flush-8:011:51:364
501816993230,1cyclictest735623-21diskmemload12:06:247
501816993226,5cyclictest795752-21latency_hist09:31:067
501802993230,2cyclictest831350-21kworker/u16:4+flush-8:009:45:104
501802993130,1cyclictest856249-21kworker/u16:3+events_unbound11:28:454
501802993128,2cyclictest831336-21kworker/u16:0+flush-8:009:56:174
8278992290,1chrt827901-21ssh09:41:307
501816992924,4cyclictest988644-21latency_hist10:51:067
501802992926,2cyclictest1228632-21kworker/u16:0+flush-8:012:31:174
9764842280,1chrt976485-21ssh10:45:507
501816992822,5cyclictest735622-21latency_hist09:06:067
501812992824,3cyclictest620634-21kworker/u16:2+flush-8:011:16:066
501810992826,2cyclictest620634-21kworker/u16:2+flush-8:009:36:295
501802992825,3cyclictest581875-21kworker/u16:1+events_unbound09:11:324
50143822818,7sleep60-21swapper/607:05:056
7722482270,1chrt0-21swapper/709:21:187
501816992722,4cyclictest639771-21latency_hist08:16:067
501816992722,4cyclictest639771-21latency_hist08:16:067
501816992722,4cyclictest1024659-21latency_hist11:06:067
501816992625,0cyclictest0-21swapper/710:01:227
501816992624,1cyclictest881588-21ssh10:06:197
501810992624,2cyclictest856249-21kworker/u16:3+flush-8:012:16:225
501810992624,2cyclictest856249-21kworker/u16:3+flush-8:012:16:225
501802992523,2cyclictest581875-21kworker/u16:1+flush-8:009:41:014
501816992420,2cyclictest925657-21ssh10:21:317
501810992422,2cyclictest831336-21kworker/u16:0+events_unbound09:56:345
501810992422,2cyclictest620634-21kworker/u16:2+flush-8:011:21:295
501810992422,2cyclictest620634-21kworker/u16:2+events_unbound11:11:315
501810992421,3cyclictest1168889-21kworker/u16:4+flush-8:012:35:365
501802992422,2cyclictest856249-21kworker/u16:3+events_unbound11:17:444
501802992421,2cyclictest667327-21kworker/u16:3+events_unbound08:41:204
501802992321,2cyclictest581875-21kworker/u16:1+flush-8:008:11:314
501802992321,2cyclictest581875-21kworker/u16:1+flush-8:008:11:314
501816992221,0cyclictest0-21swapper/711:35:537
501810992220,2cyclictest879924-21kworker/u16:1+events_unbound10:16:345
501802992220,2cyclictest581875-21kworker/u16:1+events_unbound08:26:214
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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