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2025-12-29 - 04:10
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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 rackeslot5.osadl.org (updated Mon Dec 29, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27083993028,1cyclictest9403-21cron00:15:012
27083993028,1cyclictest8567-21sendmail-msp19:40:012
2708399300,29cyclictest29764-21idleruntime-cro23:50:012
27077993027,2cyclictest27447-21cron23:45:011
2707799300,1cyclictest307-21systemd-journal00:20:011
27087992927,1cyclictest0-21swapper/322:30:003
27083992928,1cyclictest14717-21apt-get21:00:142
2708399290,28cyclictest4089-21apt-get22:55:172
2708399290,28cyclictest32377-21apt-get23:55:132
2708399290,28cyclictest20740-21apt-get23:30:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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