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2026-04-30 - 22:30
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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 Thu Apr 30, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1138621275,15sleep00-21swapper/006:58:230
118349911342,12cyclictest0-21swapper/109:27:291
11842991043,71cyclictest24184-21apt-get10:02:242
118349910442,11cyclictest0-21swapper/110:07:441
118429910364,8cyclictest181rcu_preempt09:44:072
118349910343,9cyclictest0-21swapper/112:27:401
118349910341,12cyclictest0-21swapper/110:37:381
11834991013,77cyclictest30395-21apt-get10:12:241
118229910116,47cyclictest15-21ksoftirqd/012:18:130
1183499943,60cyclictest24211-21dpkg10:02:241
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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