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2026-07-04 - 11:15
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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 rack0slot5.osadl.org (updated Sat Jul 04, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
108795299731311,419cyclictest0-21swapper/1519:27:237
1087917995450,28cyclictest0-21swapper/621:17:3912
10879419954219,521cyclictest0-21swapper/1223:35:394
10879089954019,520cyclictest0-21swapper/422:45:3910
108794699539538,1cyclictest0-21swapper/1319:12:395
1087917995287,519cyclictest0-21swapper/621:22:3912
108793099521519,2cyclictest1114789-21kworker/10:1+i915-unordered19:53:392
108793099521519,2cyclictest1114789-21kworker/10:1+i915-unordered19:53:392
108792799520519,1cyclictest1310628-21kworker/9:2+i915-unordered23:33:3915
108794999519518,1cyclictest1257256-21kworker/14:0+i915-unordered22:18:396
108791999511509,2cyclictest1302124-21kworker/7:2+i915-unordered23:17:3913
108790899509508,1cyclictest1304923-21kworker/4:1+i915-unordered23:35:3910
108789899509506,2cyclictest1168545-21kworker/1:2+i915-unordered20:40:391
108794999506504,2cyclictest1155187-21kworker/14:2+i915-unordered21:22:396
108790599505475,30cyclictest0-21swapper/323:54:399
108790599503503,0cyclictest1163932-21kworker/3:3+i915-unordered23:58:399
10879469949612,484cyclictest0-21swapper/1300:08:395
10879089949416,477cyclictest0-21swapper/419:53:3910
10879089949416,477cyclictest0-21swapper/419:53:3910
108789899494491,2cyclictest1163960-21kworker/1:1+i915-unordered20:33:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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