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2026-07-03 - 07:51
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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 rackdslot3.osadl.org (updated Fri Jul 03, 2026 00:45:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491235168,22phc2sys0-21swapper/319:06:213
326252204171,22sleep10-21swapper/119:09:341
324212203170,22sleep20-21swapper/219:06:572
323752202169,22sleep00-21swapper/019:06:220
495996560,3cyclictest9-21ksoftirqd/000:20:000
49899623,12cyclictest17622-21grep22:00:133
49899619,9cyclictest27557-21tr23:25:253
49899613,11cyclictest2518-21gnome-shell23:20:003
221452600,6sleep149699cyclictest23:15:201
49899565,9cyclictest20414-21wc23:10:243
49899562,12cyclictest490-21irqrtprio20:15:173
49899555,12cyclictest8493-21awk22:45:273
49899553,12cyclictest32302-21df_abs22:30:143
49899550,16cyclictest0-21swapper/319:25:243
277652550,2sleep00-21swapper/020:05:150
49899542,11cyclictest12792-21/usr/sbin/munin19:35:123
49899541,11cyclictest31677-21cut21:20:203
49899536,17cyclictest10880-21switchtime20:35:253
49899535,10cyclictest20960-21ls22:05:203
136962530,3sleep113701-21latency21:50:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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