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2026-09-15 - 02:11
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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 Sep 14, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2848521748,57sleep228541-21latency07:04:452
2872021268,83sleep028113-21/usr/sbin/munin07:04:560
296099911718,26cyclictest18580-21sh12:14:050
29620991123,80cyclictest17378-21apt-get08:09:282
296099911145,61cyclictest29597-21cyclictest08:54:480
296099911016,20cyclictest14946-21sh12:07:110
29609991093,26cyclictest343-21runrttasks11:37:290
296139910651,49cyclictest29597-21cyclictest07:24:421
296099910345,51cyclictest29597-21cyclictest11:29:420
29609991034,12cyclictest21944-21apt-get12:19:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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