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2026-11-01 - 02:41
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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 rack4slot6.osadl.org (updated Sun Nov 01, 2026 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18549521200,111pltrace0-21swapper/719:10:007
15762521050,101pltrace0-21swapper/119:05:221
1576252970,88pltrace0-21swapper/319:05:123
172222950,0sleep40-21swapper/420:00:224
1576252910,82pltrace0-21swapper/519:07:175
1576252890,80pltrace0-21swapper/219:05:162
1214952810,0pltrace0-21swapper/319:52:413
1859127442,11sleep40-21swapper/419:08:154
1576252680,60pltrace0-21swapper/619:05:126
1728052660,7pltrace78-21ksoftirqd/723:15:427
1861626450,10sleep00-21swapper/019:08:350
404852560,4pltrace78-21ksoftirqd/722:29:427
2758652470,3pltrace78-21ksoftirqd/723:23:457
315852440,7pltrace78-21ksoftirqd/700:04:407
1456452440,7pltrace78-21ksoftirqd/722:40:557
2153652430,5pltrace0-21swapper/722:12:597
1887199431,40cyclictest32143-21cat00:00:005
2153652410,7pltrace78-21ksoftirqd/722:16:087
1885299411,39cyclictest32145-21wc00:00:000
3109752370,6pltrace78-21ksoftirqd/721:22:367
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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