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2025-11-27 - 14:16
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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 rackdslot2.osadl.org (updated Thu Nov 27, 2025 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
136691234206,19phc2sys0-21swapper/319:07:593
232042221129,83sleep10-21swapper/119:05:241
239862206172,23sleep20-21swapper/219:09:512
236782205172,22sleep00-21swapper/019:05:550
136591650,1ptp4l401ktimersoftd/322:30:263
202122640,2sleep00-21swapper/022:30:180
2429499611,25cyclictest8554-21awk23:10:261
2429499601,27cyclictest4225-21memory00:10:211
2429499591,24cyclictest12461-21latency_hist00:30:001
2429499584,20cyclictest0-21swapper/122:30:261
2429499581,26cyclictest15265-21ps19:55:251
2429499581,26cyclictest15265-21ps19:55:241
2429499581,22cyclictest9560-21awk22:05:271
197632580,2sleep00-21swapper/021:20:180
94842570,2sleep10-21swapper/121:00:131
2429499574,22cyclictest31514-21sshd22:51:401
2429499570,22cyclictest9179-21apt-get23:15:101
2429499561,23cyclictest28185-21timedrift19:15:241
2429499550,25cyclictest16507-21grep22:20:251
2429499550,23cyclictest17191-21sed21:15:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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