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2026-06-28 - 02:40
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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 Jun 27, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1730021590,10sleep3451rcuc/306:53:393
17610214511,96sleep017658-21grep06:53:540
185139912638,63cyclictest6880-21apt-get10:13:550
18513991225,94cyclictest11647-21apt-get08:13:280
185139911537,14cyclictest0-21swapper/012:23:300
185139911537,14cyclictest0-21swapper/012:23:300
185139911237,12cyclictest0-21swapper/011:18:350
185139911237,12cyclictest0-21swapper/011:18:350
18419211123,55sleep218382-21/usr/sbin/munin06:58:162
18513991083,25cyclictest16158-21apt-get11:23:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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