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2026-03-15 - 01:28
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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 rackfslot7.osadl.org (updated Sat Mar 14, 2026 12:46:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3618803999595,0cyclictest0-21swapper/108:20:161
3618804996159,2cyclictest421ktimers/209:40:152
3618809995638,18cyclictest0-21swapper/711:20:167
3618803995436,18cyclictest872-21mta-sts-daemon08:30:161
3618804995213,19cyclictest0-21swapper/207:10:142
3618804995212,39cyclictest0-21swapper/212:00:172
3618802995113,19cyclictest0-21swapper/011:40:160
3618804995031,19cyclictest0-21swapper/212:20:162
3618803995032,18cyclictest0-21swapper/109:50:151
3618802995012,0cyclictest0-21swapper/010:30:170
3618805994930,19cyclictest0-21swapper/311:24:203
3618804994911,37cyclictest0-21swapper/211:45:132
361880599489,39cyclictest0-21swapper/312:27:053
361880599489,39cyclictest0-21swapper/312:15:553
361880599489,39cyclictest0-21swapper/311:42:033
361880599489,39cyclictest0-21swapper/310:59:033
361880599489,39cyclictest0-21swapper/310:27:033
361880599489,39cyclictest0-21swapper/308:45:033
361880599489,39cyclictest0-21swapper/308:39:053
361880599489,39cyclictest0-21swapper/307:41:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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