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2026-04-30 - 11:59
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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 20 highest latencies:
System rackeslot5.osadl.org (updated Thu Apr 30, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1032599300,29cyclictest0-21swapper/221:50:122
1032199300,29cyclictest625-21avahi-daemon23:50:011
1031699301,1cyclictest1-21systemd23:45:010
1033099290,28cyclictest29007-21apt-get22:15:003
1033099290,28cyclictest1615-21apt-get00:20:123
10325992928,1cyclictest8465-21sh20:15:012
10325992927,1cyclictest9778-21munin-run23:00:012
1032599290,28cyclictest28041-21apt-get00:00:122
1032599290,28cyclictest1494-21sendmail-msp20:00:012
1032199290,28cyclictest23994-21apt-get22:00:131
1032199290,28cyclictest0-21swapper/122:10:001
1032199290,1cyclictest12882-21apt-get19:15:121
1031699290,28cyclictest0-21swapper/000:30:110
10330992828,0cyclictest0-21swapper/323:30:133
10330992828,0cyclictest0-21swapper/321:00:113
1033099280,1cyclictest4080-21perf21:15:003
10325992828,0cyclictest785-21apt-get22:30:122
10325992826,1cyclictest307-21systemd-journal23:20:012
10325992826,1cyclictest24899-21apt-get19:40:132
10321992827,1cyclictest17852-21apt-get19:25:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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