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2026-04-29 - 11:36
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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 rack5slot3.osadl.org (updated Wed Apr 29, 2026 00:57:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
199259979834,761cyclictest0-21swapper/421:00:444
199259979027,760cyclictest49-21ksoftirqd/400:02:374
199259976183,675cyclictest0-21swapper/422:57:224
199259975172,467cyclictest0-21swapper/422:45:344
1992399738184,295cyclictest0-21swapper/222:30:142
199259970669,634cyclictest0-21swapper/423:28:414
1992299704112,126cyclictest0-21swapper/121:47:531
199259969919,169cyclictest0-21swapper/422:18:244
199259969919,169cyclictest0-21swapper/422:18:244
199229968144,381cyclictest0-21swapper/121:37:491
1992399673124,126cyclictest0-21swapper/200:25:092
199229967334,126cyclictest32328-21ssh00:14:081
1992799671121,126cyclictest0-21swapper/621:46:466
1992699669116,381cyclictest0-21swapper/523:28:475
199229966065,423cyclictest12573-21kworker/u16:223:25:561
199259965416,635cyclictest0-21swapper/421:48:534
19927996384,2cyclictest0-21swapper/621:58:096
19928996351,383cyclictest0-21swapper/721:58:107
199289963035,427cyclictest121rcu_preempt22:45:277
199259963035,592cyclictest0-21swapper/400:13:054
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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