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2026-08-18 - 02:51
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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 Mon Aug 17, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27061212912,79sleep027030-21apt-get07:05:210
28355210613,63sleep128380-21munin-plugin-st07:09:511
284989910547,15cyclictest28485-21cyclictest07:45:131
27909210011,55sleep227996-21unixbench_multi07:06:092
28498999957,11cyclictest28485-21cyclictest08:04:521
28498999957,11cyclictest28485-21cyclictest08:04:521
70872920,7sleep30-21swapper/307:40:263
70872920,7sleep30-21swapper/307:40:263
28501999158,10cyclictest0-21swapper/209:09:582
28498999064,19cyclictest28765-21timerwakeupswit09:50:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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