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2026-08-11 - 17:21
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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 rack1slot3.osadl.org (updated Tue Aug 11, 2026 12:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
127742991413,0cyclictest0-21swapper/309:17:233
127742991413,0cyclictest0-21swapper/307:30:523
127742991313,0cyclictest0-21swapper/311:20:153
127742991313,0cyclictest0-21swapper/311:11:023
127742991313,0cyclictest0-21swapper/310:43:243
127742991313,0cyclictest0-21swapper/310:29:033
127742991313,0cyclictest0-21swapper/310:16:463
127742991313,0cyclictest0-21swapper/309:20:273
127742991312,0cyclictest0-21swapper/312:11:283
127742991312,0cyclictest0-21swapper/311:52:003
127742991312,0cyclictest0-21swapper/311:43:483
127742991312,0cyclictest0-21swapper/311:31:323
127742991312,0cyclictest0-21swapper/308:19:003
127742991312,0cyclictest0-21swapper/308:05:423
127742991312,0cyclictest0-21swapper/307:57:313
12774299130,12cyclictest0-21swapper/311:35:123
12774299130,11cyclictest0-21swapper/311:25:143
12774299130,11cyclictest0-21swapper/310:55:133
12774299130,11cyclictest0-21swapper/310:20:113
127742991212,0cyclictest0-21swapper/312:01:133
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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