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2026-03-30 - 16:06
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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
Characteristics of the 20 highest latencies:
System rackcslot4.osadl.org (updated Mon Mar 30, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23376192254180,29sleep10-21swapper/119:09:501
23375642238195,28sleep00-21swapper/019:09:140
25157202750,11sleep126-21ksoftirqd/100:12:531
24722822590,5sleep00-21swapper/023:10:130
179699540,4rtkit-daemon1795-21rtkit-daemon22:43:240
233773099524,8cyclictest2411917-21apt-get21:45:130
233773099523,6cyclictest2531114-21apt-get00:35:140
179699520,4rtkit-daemon1795-21rtkit-daemon23:23:570
233773099513,5cyclictest2397729-21apt-get21:25:160
233773099512,8cyclictest2415611-21apt-get21:50:140
233773099502,6cyclictest2527704-21apt-get00:30:140
233773099502,5cyclictest2516815-21apt-get00:15:130
233773099492,6cyclictest2394041-21appstreamcli21:20:040
179699490,3rtkit-daemon1795-21rtkit-daemon22:32:051
233773099482,5cyclictest2482664-21apt-get23:25:130
233773099482,11cyclictest2401278-21apt-get21:30:130
233773099479,4cyclictest2386077-21diskmemload21:40:250
233773099472,6cyclictest2437521-21apt-get22:20:130
233773099471,7cyclictest2444544-21apt-get22:30:140
24718042450,6sleep10-21swapper/123:09:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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