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2026-07-01 - 04:55
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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 Wed Jul 01, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
549221166,16sleep00-21swapper/018:55:580
58119910844,36cyclictest352-21runrttasks22:02:181
58169910150,11cyclictest181rcu_preempt23:46:292
5806991012,45cyclictest15-21ksoftirqd/023:53:190
5816999932,20cyclictest5796-21cyclictest00:08:332
5816999932,20cyclictest5796-21cyclictest00:08:332
581699992,66cyclictest31976-21apt-get22:23:172
581199982,33cyclictest26180-21runrttasks23:06:401
5811999739,30cyclictest9128-21ntp_kernel_pll_22:38:281
580699973,53cyclictest15-21ksoftirqd/020:13:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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