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2025-07-15 - 12:32
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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 Tue Jul 15, 2025 00:46:04)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20529992320,2cyclictest26520-21php7.023:09:001
20529992320,2cyclictest26520-21php7.023:09:001
20530992220,1cyclictest4867-21cnf-update-db20:35:022
2052999220,21cyclictest823-21systemd-network23:18:561
2052999220,21cyclictest823-21systemd-network00:15:071
2052999210,4cyclictest3874-21tr23:25:141
2053099204,15cyclictest0-21swapper/220:23:252
2053099202,3cyclictest11964-21grep22:40:202
2053099202,3cyclictest11964-21grep22:40:202
2053099200,5cyclictest0-21swapper/219:45:192
20529992017,1cyclictest0-21swapper/122:20:011
20529992016,3cyclictest0-21swapper/100:29:591
2053099193,15cyclictest0-21swapper/219:10:212
20530991917,1cyclictest0-21swapper/222:02:492
2053099190,1cyclictest0-21swapper/200:35:202
2053099190,18cyclictest0-21swapper/222:09:542
2052999193,15cyclictest24453-21basename20:10:241
20529991917,1cyclictest0-21swapper/122:11:371
20529991916,2cyclictest30690-21cut20:25:001
20528991917,1cyclictest0-21swapper/019:18:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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