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2026-07-15 - 16:08
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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 Jul 15, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1229226670,38sleep30-21swapper/306:56:583
11166214913,92sleep211217-21fschecks_time06:52:502
12385991134,95cyclictest30338-21apt-get11:02:140
1219921136,86sleep00-21swapper/006:56:150
12385991052,84cyclictest19755-21kworker/u19:1+ext4-rsv-conversion09:07:280
12388999961,21cyclictest6462-21taskset10:22:281
12388999961,21cyclictest6462-21taskset10:22:281
12385999972,17cyclictest277-21dbus-daemon07:27:000
274542960,8sleep30-21swapper/307:41:343
1238599963,74cyclictest10127-21runrttasks08:27:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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