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2026-06-10 - 12:50
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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
Characteristics of the 20 highest latencies:
System rackdslot3.osadl.org (updated Wed Jun 10, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8872228199,19sleep00-21swapper/019:05:580
139491206173,22phc2sys0-21swapper/319:05:333
8892203171,21sleep20-21swapper/219:06:002
8682200168,21sleep10-21swapper/119:05:441
526321590,8sleep1151999cyclictest23:45:241
40092560,3sleep24015-21timerandwakeup22:35:252
139391550,1ptp4l401ktimersoftd/320:45:353
190312540,4sleep319026-21apt-config23:10:003
131862540,1sleep30-21swapper/322:55:243
301602500,2sleep130141-21apt-config00:40:001
139391500,1ptp4l401ktimersoftd/322:17:203
139391500,0ptp4l401ktimersoftd/320:57:393
139391470,0ptp4l401ktimersoftd/300:07:033
1519994440,2cyclictest25-21ksoftirqd/122:30:011
57898430,8rtkit-daemon0-21swapper/122:11:361
139391430,0ptp4l401ktimersoftd/323:00:023
139391420,0ptp4l401ktimersoftd/323:10:333
139391420,0ptp4l401ktimersoftd/322:40:173
1521994126,7cyclictest41-21ksoftirqd/319:50:153
1520994133,5cyclictest33-21ksoftirqd/200:15:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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