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2026-05-20 - 22:15
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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 Wed May 20, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14624220811,94sleep214702-21/usr/sbin/munin06:56:072
14786213511,96sleep114856-21tune2fs06:56:141
1489721049,22sleep30-21swapper/306:56:163
16062991023,72cyclictest30211-21apt-get10:06:150
16062991023,72cyclictest30211-21apt-get10:06:150
160679910057,38cyclictest16053-21cyclictest10:35:211
16067999933,37cyclictest0-21swapper/110:00:481
1606299998,78cyclictest10922-21apt-get11:21:030
1606299998,71cyclictest12419-21apt-get10:31:040
16062999942,13cyclictest16053-21cyclictest10:17:370
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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