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2026-04-16 - 03:09
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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 Thu Apr 16, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2544322280,19sleep10-21swapper/118:59:361
265569910284,11cyclictest14528-21/usr/sbin/munin00:08:371
265569910284,11cyclictest14528-21/usr/sbin/munin00:08:371
26554999543,42cyclictest2115-21latency_hist21:58:090
26554999543,42cyclictest2115-21latency_hist21:58:090
26556999043,16cyclictest8468-21latency_hist23:03:091
257062899,55sleep025730-21proc_pri18:59:480
26560998866,15cyclictest26542-21cyclictest23:03:092
26560998864,13cyclictest0-21swapper/220:33:262
26556998763,17cyclictest352-21runrttasks22:33:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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