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2026-06-25 - 04:08
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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 50 highest latencies:
System rackdslot4.osadl.org (updated Thu Jun 25, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
93572225166,48sleep10-21swapper/119:05:581
138591205171,23phc2sys0-21swapper/319:05:363
94402203170,22sleep20-21swapper/219:07:042
95502202168,22sleep00-21swapper/019:08:310
138491770,2ptp4l401ktimersoftd/319:10:023
996799666,12cyclictest12184-21latency_hist20:20:001
996799636,11cyclictest2592-21cpuspeed_turbos21:05:121
996799635,12cyclictest27554-21tr20:50:131
996799635,12cyclictest26718-21sed20:45:271
996799635,12cyclictest21471-21ls20:35:251
9967996310,10cyclictest18688-21ls22:40:241
996799628,10cyclictest30609-21ls23:05:201
996799628,10cyclictest11577-21ls19:10:251
996799627,11cyclictest19504-21latency_hist20:35:001
996799618,16cyclictest25914-21sed00:00:271
996799617,10cyclictest16325-21mailstats20:25:221
996799617,10cyclictest13877-21gzip19:15:231
996799615,12cyclictest0-21swapper/123:00:261
996799614,17cyclictest0-21swapper/121:50:231
996799614,16cyclictest0-21swapper/121:20:001
996799609,9cyclictest8405-21cut23:25:211
996799606,11cyclictest10338-21fschecks_count00:35:151
996799605,10cyclictest24692-21latency_hist20:45:001
996799604,17cyclictest0-21swapper/119:55:121
996799604,16cyclictest0-21swapper/123:55:241
996799597,10cyclictest28727-21ls00:05:251
996799597,10cyclictest14311-21latency_hist23:40:001
996799596,12cyclictest2337-21apt-config20:00:011
996799596,11cyclictest24614-21latency_hist20:45:001
996799595,12cyclictest23113-21irqrtprio21:45:191
996799594,10cyclictest0-21swapper/120:10:261
996799592,16cyclictest0-21swapper/122:00:221
996799586,9cyclictest15333-21cut23:40:191
996799586,11cyclictest30771-21cut20:55:161
996799585,9cyclictest0-21swapper/100:20:001
996799585,17cyclictest5428-21irqrtprio23:20:161
996799584,17cyclictest3682-21switchtime22:10:251
996799584,17cyclictest0-21swapper/123:20:001
996799584,17cyclictest0-21swapper/123:20:001
996799577,16cyclictest20963-21grep21:40:221
996799577,16cyclictest20963-21grep21:40:221
996799576,15cyclictest1325-21cat22:05:241
996799576,10cyclictest28711-21sed21:55:271
9966995727,4cyclictest9-21ksoftirqd/020:35:150
46732570,3sleep24672-21date00:24:592
138491570,1ptp4l401ktimersoftd/322:52:113
138491570,1ptp4l401ktimersoftd/322:07:493
996799569,9cyclictest24616-21grep22:55:131
996799567,16cyclictest10650-21irqrtprio22:25:191
996799566,9cyclictest31026-21phc2sys-jitter19:50:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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