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2026-06-02 - 16:26
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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 rack1slot8.osadl.org (updated Tue Jun 02, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
630499853777,45cyclictest88750irq/45-eth0-rx-07:47:101
630399843773,34cyclictest6934-21if_eth007:10:180
58592739717,16sleep10-21swapper/107:05:551
60192159137,15sleep00-21swapper/007:07:280
63039910716,31cyclictest0-21swapper/008:58:580
2286991060,4rtkit-daemon2285-21rtkit-daemon10:22:141
6303991055,93cyclictest0-21swapper/009:14:590
2286991050,4rtkit-daemon2285-21rtkit-daemon10:02:391
2286991040,5rtkit-daemon2285-21rtkit-daemon12:20:011
2286991030,4rtkit-daemon2285-21rtkit-daemon10:36:181
2286991000,5rtkit-daemon2285-21rtkit-daemon11:26:561
2286991000,4rtkit-daemon2285-21rtkit-daemon11:00:551
228699990,4rtkit-daemon2285-21rtkit-daemon12:37:021
228699990,4rtkit-daemon2285-21rtkit-daemon12:37:011
228699990,4rtkit-daemon2285-21rtkit-daemon11:56:011
228699990,4rtkit-daemon2285-21rtkit-daemon11:36:261
228699990,4rtkit-daemon2285-21rtkit-daemon09:00:571
228699990,4rtkit-daemon2285-21rtkit-daemon07:19:461
228699980,5rtkit-daemon2285-21rtkit-daemon09:30:481
228699980,4rtkit-daemon2285-21rtkit-daemon12:11:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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