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2026-04-05 - 15:31
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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
Characteristics of the 20 highest latencies:
System rackdslot0.osadl.org (updated Sun Apr 05, 2026 12:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1089199240,23cyclictest26208-21iwlist09:30:150
10891992314,8cyclictest0-21swapper/007:35:010
10891992314,4cyclictest0-21swapper/010:00:000
1089199222,4cyclictest7651-21perf11:50:000
10891992213,5cyclictest0-21swapper/012:34:270
1089199220,18cyclictest0-21swapper/008:24:390
10893992117,3cyclictest0-21swapper/211:40:552
10893992117,3cyclictest0-21swapper/208:51:002
1089199210,17cyclictest0-21swapper/007:45:130
10892992018,1cyclictest15293-21ntp_kernel_err07:15:181
1089199202,14cyclictest0-21swapper/009:07:010
1089399192,16cyclictest29670-21grep10:35:002
1089399192,16cyclictest20726-21needreboot12:10:172
10893991917,1cyclictest0-21swapper/209:34:582
10893991917,1cyclictest0-21swapper/207:56:222
10893991916,2cyclictest26508-21cut12:20:202
10893991915,3cyclictest0-21swapper/209:43:382
10893991915,2cyclictest29346-21nfsd409:35:172
1089399191,17cyclictest0-21swapper/208:43:232
1089399190,16cyclictest3976-21H222:10:212
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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