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2026-09-11 - 09:19
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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 rackdslot0.osadl.org (updated Fri Sep 11, 2026 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3274099266,5cyclictest0-21swapper/122:20:141
3274099260,15cyclictest0-21swapper/100:25:211
3274099254,20cyclictest0-21swapper/121:18:311
3274099254,1cyclictest0-21swapper/119:18:561
3274099244,1cyclictest0-21swapper/123:15:231
3274099241,3cyclictest12896-21tr21:25:131
32740992411,8cyclictest0-21swapper/123:14:441
3274099240,2cyclictest6552-21python321:15:001
3273799244,1cyclictest0-21swapper/000:17:060
3274099232,6cyclictest0-21swapper/123:25:121
3274099232,1cyclictest10842-21uname00:10:221
3274099230,22cyclictest23554-21sessionclean23:38:581
3274099230,17cyclictest19401-21ntp_offset19:40:191
3274099230,16cyclictest29115-21ls23:45:201
3273799230,4cyclictest0-21swapper/019:15:420
3273799230,16cyclictest0-21swapper/022:52:480
3274099221,20cyclictest0-21swapper/100:21:551
32740992211,6cyclictest4258-21fschecks_time00:00:151
3274099220,4cyclictest0-21swapper/120:55:561
3274099220,2cyclictest32429-21perf23:55:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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