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2026-03-10 - 00:14
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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 rackfslot7.osadl.org (updated Mon Mar 09, 2026 12:46:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1574407991470,145cyclictest0-21swapper/307:45:113
1574404999112,79cyclictest0-21swapper/008:05:140
1574407998728,39cyclictest1673716-21taskset10:09:193
1574407998728,39cyclictest1673716-21taskset10:09:193
1574407997937,19cyclictest1724111-21/usr/sbin/munin11:40:153
1574407997836,19cyclictest1680567-21fschecks_time10:20:143
1574407997719,39cyclictest1755653-21memory12:35:193
1574407997634,38cyclictest1741738-21if_eno412:10:153
1574407997315,39cyclictest1705042-21cut11:05:113
1574407996849,19cyclictest0-21swapper/307:25:573
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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