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2025-12-15 - 01:46
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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 rack5slot3.osadl.org (updated Sun Dec 14, 2025 12:50:12)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1707729186,3sleep30-21swapper/307:09:293
1625428554,26sleep10-21swapper/107:05:181
1676728233,43sleep40-21swapper/407:05:214
1688127844,30sleep20-21swapper/207:06:402
1679127643,29sleep60-21swapper/607:05:246
1695927439,30sleep50-21swapper/507:07:475
1691327338,31sleep70-21swapper/707:07:087
1682327339,30sleep00-21swapper/007:05:490
236452470,0sleep723650-21unixbench_singl10:50:237
17547994544,0cyclictest0-21swapper/108:10:121
17548994444,0cyclictest0-21swapper/211:25:122
17548994210,0cyclictest0-21swapper/209:00:132
17548994141,0cyclictest0-21swapper/208:35:122
17547994040,0cyclictest0-21swapper/107:25:161
1755199390,38cyclictest0-21swapper/512:00:115
17550993938,0cyclictest0-21swapper/410:55:124
17552993736,0cyclictest10369-21apt-get12:20:106
17553993610,26cyclictest0-21swapper/711:00:137
17553993610,0cyclictest0-21swapper/708:50:017
17552993636,0cyclictest0-21swapper/608:20:136
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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