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2026-09-17 - 10:18
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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 rack8slot7.osadl.org (updated Thu Sep 17, 2026 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10256992017,2cyclictest674-21snmpd21:55:462
10245991918,1cyclictest59550irq/125-lan23:43:250
10245991918,1cyclictest59550irq/125-lan22:42:170
10245991918,1cyclictest59550irq/125-lan22:39:420
10245991918,1cyclictest59550irq/125-lan22:16:190
10245991918,1cyclictest59550irq/125-lan22:02:520
10245991918,1cyclictest59550irq/125-lan00:01:390
10245991818,0cyclictest59550irq/125-lan23:46:370
10245991818,0cyclictest59550irq/125-lan23:20:070
10245991818,0cyclictest59550irq/125-lan22:52:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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