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2025-11-28 - 06:07
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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 rackdslot0.osadl.org (updated Fri Nov 28, 2025 00:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
378993120,10cyclictest28-21ksoftirqd/219:47:042
376992421,2cyclictest19708-21awk21:35:201
37699230,22cyclictest0-21swapper/100:37:131
375992316,6cyclictest12276-21cat19:30:010
37599230,22cyclictest0-21swapper/023:01:090
37599220,21cyclictest823-21systemd-network19:18:390
376992110,10cyclictest3441-21gsd-color19:50:181
378992018,1cyclictest0-21swapper/222:20:012
376992017,2cyclictest454-21plymouthd21:19:151
376992014,5cyclictest6682-21latency_hist19:20:001
376992014,3cyclictest0-21swapper/120:40:151
37599203,15cyclictest14436-21apt-key20:30:020
375992016,3cyclictest13788-21nfsd419:30:190
37599201,18cyclictest4705-21grep00:00:210
37599200,19cyclictest20054-21needreboot23:30:170
37899193,1cyclictest7764-21expr21:15:132
378991917,1cyclictest0-21swapper/219:40:172
378991914,3cyclictest0-21swapper/221:47:582
378991914,2cyclictest4530-21H212:26:332
37899190,18cyclictest0-21swapper/219:24:292
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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