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2025-09-15 - 21:21
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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 20 highest latencies:
System rack0slot8.osadl.org (updated Mon Sep 15, 2025 12:45:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
415658099413410,2cyclictest0-21swapper/709:41:1913
415658099411408,2cyclictest210081-21kworker/u64:4+events_unbound11:35:2813
415658099410407,2cyclictest155179-21kworker/u64:2+events_unbound11:28:1913
415658099410407,2cyclictest103221-21kworker/u64:1+events_unbound10:07:4813
415658099407404,2cyclictest223207-21kworker/u64:1+events_unbound11:47:4913
415658599406404,1cyclictest0-21swapper/1111:53:243
415658299406401,4cyclictest0-21swapper/909:41:1915
415658299398395,2cyclictest7010-21kworker/u64:3+events_unbound09:54:0915
415658599395390,3cyclictest103221-21kworker/u64:1+events_unbound09:41:193
415658599391388,2cyclictest62588-21kworker/u64:0+events_unbound10:05:363
415658599390390,0cyclictest0-21swapper/1110:16:193
415658599387387,0cyclictest0-21swapper/1107:57:463
415658599387387,0cyclictest0-21swapper/1107:57:453
415658599386386,0cyclictest0-21swapper/1109:33:593
415658999382380,1cyclictest0-21swapper/1309:41:195
415659199378377,0cyclictest0-21swapper/1511:48:087
415657299374371,2cyclictest0-21swapper/011:48:080
415658999368365,2cyclictest62588-21kworker/u64:0+events_unbound10:29:425
415658999368365,2cyclictest62588-21kworker/u64:0+events_unbound10:29:415
415657599366363,2cyclictest1857870-21kworker/u64:2+events_unbound08:26:268
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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