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2026-05-07 - 07:58
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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 50 highest latencies:
System rackdslot0.osadl.org (updated Thu May 07, 2026 00:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6039992321,1cyclictest0-21swapper/121:50:201
603899237,15cyclictest0-21swapper/019:47:030
603899230,23cyclictest0-21swapper/021:55:150
604099220,4cyclictest0-21swapper/200:09:572
6040992117,3cyclictest0-21swapper/222:20:322
604099204,15cyclictest0-21swapper/220:20:432
604099201,17cyclictest3058-21rs:main2
604099193,1cyclictest10411-21sessionclean22:08:592
604099192,1cyclictest3987-21H222:10:212
604099192,15cyclictest3987-21H222:10:212
6040991916,2cyclictest21732-21cut21:30:142
604099190,4cyclictest24115-21grep23:30:152
604099190,2cyclictest3987-21H222:10:212
604099190,1cyclictest0-21swapper/220:15:172
604099190,18cyclictest0-21swapper/220:25:132
604099190,16cyclictest3985-21H222:10:212
603999193,15cyclictest21-21ksoftirqd/122:39:131
6039991916,2cyclictest13410-21nfsd421:15:171
6039991915,3cyclictest0-21swapper/121:10:141
603999191,17cyclictest24333-21cat23:30:161
603999190,16cyclictest3985-21H222:10:211
603899192,2cyclictest980-21cat20:55:140
603899192,1cyclictest0-21swapper/023:05:200
6038991916,2cyclictest14672-21sed21:20:010
603899191,3cyclictest24278-21perf22:34:590
603899191,16cyclictest19063-21nvmesmart_nvme023:20:180
6038991911,4cyclictest0-21swapper/000:39:500
603899190,4cyclictest25696-21munin-run19:45:000
603899190,18cyclictest399-20systemd-journal22:44:110
603899190,18cyclictest0-21swapper/023:41:280
6040991815,2cyclictest18861-21nfsd423:20:162
604099181,16cyclictest29898-21cat20:50:012
604099180,3cyclictest12759-21grep23:10:132
604099180,17cyclictest29613-21python320:50:012
604099180,17cyclictest16352-21ps23:15:212
604099180,17cyclictest0-21swapper/200:20:142
603999182,2cyclictest3985-21H222:10:211
6039991816,1cyclictest24243-21grep21:35:141
6039991815,1cyclictest0-21swapper/120:20:191
6039991814,3cyclictest4099-21H222:10:211
6039991814,2cyclictest21097-21grep19:35:141
603999181,2cyclictest7188-21fschecks_time23:00:141
603999181,2cyclictest0-21swapper/120:00:001
603999180,3cyclictest0-21swapper/120:20:011
603999180,2cyclictest4099-21H222:10:211
603999180,2cyclictest3989-21H222:10:211
603999180,2cyclictest3989-21H222:10:211
603999180,17cyclictest3987-21H222:10:211
603999180,17cyclictest29014-21tr19:50:101
603899182,1cyclictest16416-21ubuntu-distro-i00:15:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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