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2026-04-15 - 06:42
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackeslot4.osadl.org (updated Wed Apr 15, 2026 00:43:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146323099310,3cyclictest1595666-21cron21:19:592
146323099302,2cyclictest1636870-21apt-get22:00:112
146323099291,2cyclictest1558427-21ntpq20:40:222
146323099290,22cyclictest1490944-21ps19:35:182
146323099281,2cyclictest1728097-21apt-get23:30:112
146323099280,2cyclictest1632290-21ps21:55:172
146323099280,19cyclictest0-21swapper/223:55:132
1463230992720,5cyclictest1799051-21ntpq00:35:202
1463228992721,4cyclictest1513703-21munin-plugin-st20:00:001
1463233992619,5cyclictest1723501-21irqcore23:25:153
146323399261,22cyclictest1795131-21apt-get00:35:103
146323399261,21cyclictest1707834-21apt-get23:10:113
146323099261,23cyclictest1656862-21latency_hist22:19:592
146323099261,1cyclictest0-21swapper/219:15:132
146323099260,25cyclictest0-21swapper/222:22:302
146323099260,25cyclictest0-21swapper/222:22:302
146323099260,1cyclictest0-21swapper/220:56:282
1463228992622,2cyclictest1707556-21ls23:10:011
146323399251,21cyclictest0-21swapper/300:25:133
146323399251,20cyclictest0-21swapper/323:30:123
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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