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2025-12-20 - 15:52
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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 50 highest latencies:
System rackeslot8.osadl.org (updated Sat Dec 20, 2025 12:43:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
915614992825,1cyclictest0-21swapper/308:20:003
915614992722,3cyclictest1098383-21sleep09:30:013
915614992521,1cyclictest0-21swapper/309:45:013
915614992219,1cyclictest0-21swapper/308:35:203
915614992118,1cyclictest0-21swapper/307:45:003
91561499211,15cyclictest1233977-21turbostat11:15:003
915614992017,1cyclictest0-21swapper/311:55:013
915614992017,1cyclictest0-21swapper/311:00:253
915614992017,1cyclictest0-21swapper/308:55:013
915614992016,1cyclictest0-21swapper/311:30:003
915614991917,1cyclictest0-21swapper/307:10:003
915614991916,1cyclictest0-21swapper/312:20:003
915614991916,1cyclictest0-21swapper/312:05:143
915614991916,1cyclictest0-21swapper/310:24:593
915614991916,1cyclictest0-21swapper/309:50:213
915614991916,1cyclictest0-21swapper/308:10:223
915614991916,1cyclictest0-21swapper/307:45:183
915614991916,1cyclictest0-21swapper/307:15:223
11762962198,1sleep30-21swapper/310:30:123
915614991816,1cyclictest0-21swapper/310:05:213
915614991816,1cyclictest0-21swapper/307:15:013
915614991815,1cyclictest0-21swapper/312:25:193
915614991815,1cyclictest0-21swapper/311:50:003
915614991815,1cyclictest0-21swapper/309:10:013
915614991815,1cyclictest0-21swapper/308:55:173
915614991815,1cyclictest0-21swapper/308:05:163
91561499181,13cyclictest1241250-21taskset11:20:133
91561499181,13cyclictest1026996-21taskset08:30:263
9633562172,7sleep2963389-21apt-get07:45:142
915614991715,1cyclictest0-21swapper/311:15:163
915614991715,1cyclictest0-21swapper/310:55:193
915614991715,1cyclictest0-21swapper/308:45:173
915614991714,1cyclictest0-21swapper/312:20:193
915614991714,1cyclictest0-21swapper/310:00:243
91561499171,13cyclictest1156482-21turbostat10:15:003
91561499171,12cyclictest1292628-21taskset12:00:123
91561499171,12cyclictest1221519-21taskset11:05:143
91561499171,12cyclictest1221519-21taskset11:05:133
91561499171,12cyclictest1207893-21taskset10:51:003
91561499171,11cyclictest1130957-21taskset09:55:003
307598170,8rtkit-daemon316-21systemd-udevd07:39:440
915614991614,1cyclictest0-21swapper/309:40:003
915614991614,1cyclictest0-21swapper/308:25:183
915614991614,1cyclictest0-21swapper/307:55:243
915614991614,1cyclictest0-21swapper/307:40:013
915614991613,1cyclictest0-21swapper/310:25:193
915614991613,1cyclictest0-21swapper/308:40:183
915614991613,1cyclictest0-21swapper/307:54:593
915614991613,1cyclictest0-21swapper/307:35:013
915614991613,1cyclictest0-21swapper/307:25:273
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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