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2026-03-18 - 20:07
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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
Characteristics of the 10 highest latencies:
System rack2slot0.osadl.org (updated Wed Mar 18, 2026 12:43:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1536521010,0sleep015364-21/usr/sbin/munin09:55:130
93982930,2sleep3669399cyclictest10:04:583
253862840,0sleep01002-21snmpd10:03:110
293052830,0sleep11-21systemd12:37:271
176672590,0sleep00-21swapper/011:49:480
311402570,0sleep331139-21bash10:47:593
213162570,0sleep30-21swapper/311:09:013
59682560,1sleep2674-21dbus-daemon10:37:402
145742560,0sleep014544-21sshd10:22:040
41932540,1sleep34173-21sshd09:54:043
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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