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2026-07-03 - 01:32
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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 rackfslot7.osadl.org (updated Thu Jul 02, 2026 12:46:10)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
221450699163161,1cyclictest1-21systemd08:50:026
22145039912668,39cyclictest2385803-21basename12:19:593
2214503998686,0cyclictest0-21swapper/308:55:173
2214503997860,0cyclictest0-21swapper/311:21:433
2214503997758,19cyclictest52-21ksoftirqd/307:21:543
221450399770,76cyclictest2262450-21ntpq08:35:203
221450399760,57cyclictest2214829-21kworker/u32:4+flush-8:007:55:373
221450399750,56cyclictest2283860-21kworker/u32:2+events_unbound10:08:263
2214503997437,18cyclictest2315053-21/usr/sbin/munin10:10:153
2214503997436,18cyclictest191rcu_preempt12:01:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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