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2026-04-30 - 12:19
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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 Thu Apr 30, 2026 00:46:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
899993229,2cyclictest0-21swapper/120:30:161
89599262,23cyclictest15323-21nfsd420:30:170
89999230,5cyclictest0-21swapper/119:14:381
895992214,5cyclictest0-21swapper/021:00:160
906992018,1cyclictest8855-21grep21:15:162
89999202,17cyclictest0-21swapper/120:40:181
899992013,4cyclictest0-21swapper/121:47:261
89599204,15cyclictest0-21swapper/021:41:020
90699193,15cyclictest0-21swapper/223:36:122
90699192,16cyclictest12720-21grep20:25:192
906991917,1cyclictest0-21swapper/222:50:122
90699190,3cyclictest0-21swapper/221:50:002
89999190,2cyclictest30253-21users20:55:211
895991917,1cyclictest3989-21H222:10:210
895991917,1cyclictest3989-21H222:10:210
895991915,3cyclictest8205-21sh20:20:010
895991914,4cyclictest843-21systemd-network23:04:460
89599190,5cyclictest0-21swapper/023:46:510
90699182,15cyclictest28-21ksoftirqd/219:15:522
906991816,1cyclictest6901-21ntp_offset22:20:192
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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