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2026-08-24 - 22:35
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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 rack4slot6.osadl.org (updated Mon Aug 24, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
32155521300,121pltrace0-21swapper/207:09:092
32155521220,113pltrace0-21swapper/107:08:321
4213521100,1pltrace0-21swapper/311:14:273
32155521060,97pltrace0-21swapper/507:06:345
2541521060,102pltrace0-21swapper/707:09:377
32155521040,100pltrace0-21swapper/607:09:106
1938321010,1sleep20-21swapper/207:35:192
226627943,10sleep00-21swapper/007:05:460
254152710,57pltrace0-21swapper/307:09:273
240025945,10sleep40-21swapper/407:07:424
272899546,3cyclictest0-21swapper/310:05:003
272199510,7cyclictest0-21swapper/110:05:011
272599440,3cyclictest27065-21kworker/u16:2+rpciod@
rpc_async_schedule
13:42:162
2732994342,1cyclictest0-21swapper/410:05:004
1445852410,11pltrace78-21ksoftirqd/711:28:597
2181052360,1pltrace26959-21ssh12:39:257
21052360,1sleep70-21swapper/711:43:327
1299052360,1pltrace78-21ksoftirqd/711:54:417
1299052360,1pltrace78-21ksoftirqd/711:54:417
561152340,5pltrace0-21swapper/709:12:487
2774952340,2pltrace0-21swapper/710:36:047
421352330,6pltrace78-21ksoftirqd/711:17:337
713752320,8pltrace78-21ksoftirqd/710:16:317
1579652320,0pltrace0-21swapper/709:19:327
2741993129,1cyclictest681rcuc/610:05:006
1299052310,9pltrace78-21ksoftirqd/711:56:457
2716993024,1cyclictest2413352pltrace10:01:580
2481852300,9pltrace78-21ksoftirqd/711:38:427
1735752300,6pltrace78-21ksoftirqd/710:26:267
2736992927,1cyclictest601rcuc/510:05:005
2700452280,1pltrace0-21swapper/612:39:286
2181052280,9pltrace78-21ksoftirqd/712:34:337
1579652280,0pltrace0-21swapper/709:20:257
1144052260,3pltrace0-21swapper/712:27:277
1735752250,6pltrace78-21ksoftirqd/710:24:537
2840452240,0pltrace0-21swapper/712:13:147
713752230,2pltrace0-21swapper/710:14:577
273699230,16cyclictest0-21swapper/508:42:085
273699230,16cyclictest0-21swapper/508:42:085
272599211,14cyclictest0-21swapper/207:16:572
2413352210,7pltrace78-21ksoftirqd/710:02:077
2125152210,10pltrace0-21swapper/708:41:037
2125152210,10pltrace0-21swapper/708:41:037
560252200,1pltrace78-21ksoftirqd/710:44:577
272199201,18cyclictest0-21swapper/109:28:471
1596852200,4pltrace0-21swapper/710:56:407
3132252190,1pltrace0-21swapper/708:01:457
272599190,7cyclictest0-21swapper/209:09:512
272599190,4cyclictest0-21swapper/209:03:282
272199190,6cyclictest0-21swapper/111:55:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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