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2026-05-26 - 23:59
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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 Tue May 26, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
194562207173,22sleep30-21swapper/307:08:243
193972206173,22sleep10-21swapper/107:07:381
195082204171,22sleep00-21swapper/007:09:050
193712204171,22sleep20-21swapper/207:07:192
3164621430,3sleep11988099cyclictest08:40:201
139391650,1ptp4l401ktimersoftd/307:15:233
1988099622,58cyclictest0-21swapper/107:26:141
1988099622,58cyclictest0-21swapper/107:26:131
1988099599,11cyclictest16142-21date08:10:001
1988099599,10cyclictest6099-21latency_hist12:20:011
139391580,1ptp4l401ktimersoftd/309:50:193
1988099579,15cyclictest26505-21chrt07:20:491
19880995710,10cyclictest14623-21cat12:35:211
1988099569,11cyclictest22852-21irqrtprio09:30:191
1988099566,10cyclictest0-21swapper/112:30:221
139391560,1ptp4l401ktimersoftd/311:28:063
1988099548,15cyclictest22533-21ls10:35:271
1988099538,13cyclictest21985-21apt-get11:45:111
1987999527,21cyclictest13224-21awk08:00:270
171132510,5sleep210003-1kworker/2:2H09:20:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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