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2026-04-25 - 15:51
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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 Sat Apr 25, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2207211810,76sleep22240-21proc_pri06:58:102
2989211311,67sleep12991-21apt-get07:02:291
32699910859,42cyclictest16251-21sendmail11:52:262
295721076,16sleep00-21swapper/007:02:200
3269991065,88cyclictest18730-21apt-get07:47:412
32699910414,71cyclictest30239-21taskset10:27:492
32699910414,71cyclictest30239-21taskset10:27:492
32609910038,54cyclictest0-21swapper/110:03:011
3269999933,29cyclictest0-21swapper/212:17:222
3260999938,9cyclictest0-21swapper/109:03:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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