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2025-12-25 - 05:51
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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 Thu Dec 25, 2025 00:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29641991215,24cyclictest29643-21latency_hist19:09:530
29641991215,24cyclictest29643-21latency_hist19:09:530
29641991185,37cyclictest17156-21/usr/sbin/munin22:25:110
29641991095,29cyclictest5503-21/usr/sbin/munin23:55:160
29647991084,77cyclictest4484-21apt-get19:30:031
296419910855,46cyclictest32325-21fschecks_time23:45:100
296419910855,46cyclictest32325-21fschecks_time23:45:100
29641991073,37cyclictest346-21runrttasks23:27:100
29641991073,28cyclictest19575-21runrttasks21:35:040
702421050,5sleep10-21swapper/121:14:391
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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