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2026-03-13 - 22:34
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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 Fri Mar 13, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
33610312257187,55sleep10-21swapper/107:09:481
33608602251212,25sleep00-21swapper/007:07:560
35206242650,5sleep10-21swapper/111:45:171
336114099643,9cyclictest3369714-21apt-get07:30:120
336114099642,7cyclictest3477536-21apt-get10:45:130
336114099631,18cyclictest3527364-21apt-get11:55:130
34855692620,3sleep00-21swapper/010:55:220
33682782570,6sleep00-21swapper/007:25:190
336114099544,7cyclictest3401072-21apt-get08:50:150
336114099543,6cyclictest3445503-21apt-get10:00:110
336114099533,5cyclictest3509757-21apt-get11:30:120
336114099531,12cyclictest3427684-21apt-get09:35:130
336114099522,6cyclictest3523910-21apt-get11:50:110
336114099521,7cyclictest3535444-21ntp_states12:05:190
336114099511,7cyclictest3434850-21apt-get09:45:140
3361140995110,5cyclictest3555624-21apt-get12:35:120
179699510,3rtkit-daemon1795-21rtkit-daemon09:53:151
336114099509,4cyclictest3408685-21diskmemload11:10:220
336114099502,9cyclictest3408685-21diskmemload11:25:190
336114099492,8cyclictest3481022-21apt-get10:50:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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