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2026-07-25 - 23:32
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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 10 highest latencies:
System rackbslot7.osadl.org (updated Sat Jul 25, 2026 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37899911192,13cyclictest23886-21latency_hist11:06:201
287121089,34sleep12872-21ntp_states06:51:581
37859910792,8cyclictest0-21swapper/010:01:370
37899910646,36cyclictest0-21swapper/110:01:001
37899910561,35cyclictest0-21swapper/111:21:551
37859910310,84cyclictest4228-21ssh12:21:510
37859910310,84cyclictest4228-21ssh12:21:510
3785991023,75cyclictest11490-21apt-get08:56:330
3785991023,75cyclictest11490-21apt-get08:56:330
3789999874,15cyclictest0-21swapper/109:56:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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