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2026-06-13 - 14:33
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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 Sat Jun 13, 2026 00:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
216402204172,21sleep20-21swapper/219:08:152
215842203169,22sleep10-21swapper/119:07:311
216802202167,23sleep00-21swapper/019:08:450
214962202169,22sleep30-21swapper/319:06:243
217752163124,13sleep20-21swapper/219:10:012
990721480,6sleep02206699cyclictest19:50:210
2206999706,3cyclictest0-21swapper/319:30:273
22068996227,6cyclictest33-21ksoftirqd/222:50:002
22068996226,6cyclictest33-21ksoftirqd/220:15:012
236072610,3sleep20-21swapper/221:25:182
150192600,8sleep32206999cyclictest23:25:023
22068995926,9cyclictest33-21ksoftirqd/222:00:172
22068995922,10cyclictest33-21ksoftirqd/221:45:182
2206799598,11cyclictest26678-21latency_hist23:50:001
2206799598,10cyclictest660-21mailstats00:00:281
22068995822,10cyclictest33-21ksoftirqd/220:00:232
2206799589,10cyclictest30349-21/usr/sbin/munin20:35:161
2206799587,10cyclictest24342-21latency_hist23:45:001
2206799587,10cyclictest15421-21df_abs21:10:121
22068995726,4cyclictest33-21ksoftirqd/223:05:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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