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2025-12-03 - 21:01
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack9slot2.osadl.org (updated Wed Dec 03, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
87592341273,35sleep30-21swapper/33
89902309270,26sleep00-21swapper/00
9208992840,1cyclictest0-21swapper/22
87922257218,26sleep10-21swapper/11
90322239188,38sleep20-21swapper/22
921099218214,2cyclictest0-21swapper/33
2668421680,5sleep1920399cyclictest1
3123721450,6sleep20-21swapper/22
920399106103,2cyclictest0-21swapper/11
174192650,16sleep121-21ksoftirqd/11
269532540,1sleep00-21swapper/00
245382530,2sleep024541-21sed0
176622440,2sleep30-21swapper/33
250392410,1sleep20-21swapper/22
9210993512,20cyclictest2082-21systemd-journal3
921099329,20cyclictest27954-21cat3
9210993116,13cyclictest13434-21uptime3
9210993116,13cyclictest11718-21ntp_states3
9210993115,13cyclictest30994-21ntp_states3
921099310,5cyclictest18886-21grep3
921099310,4cyclictest3113-21memory3
921099310,3cyclictest1450-21df3
921099309,18cyclictest11321-21cut3
921099308,19cyclictest29263-21basename3
9210993016,12cyclictest13329-21proc_pri3
9210993011,17cyclictest22336-21expr3
9210993011,16cyclictest20530-21cat3
9210993010,17cyclictest18438-21expr3
920899300,28cyclictest24225-21kworker/2:02
921099298,18cyclictest992-21uname3
921099296,20cyclictest505-21dbus-daemon3
921099293,21cyclictest1743-21apt-get3
9210992913,13cyclictest20142-21ntp_states3
9210992912,15cyclictest21567-21seq3
921099290,3cyclictest11938-21df3
921099290,2cyclictest0-21swapper/33
921099289,16cyclictest5473-21swap3
921099288,17cyclictest9528-21unixbench-2d3
921099288,17cyclictest24234-21seq3
921099287,18cyclictest27778-21cat3
921099287,18cyclictest13349-21sed3
921099287,18cyclictest1183-21ntpq3
921099287,18cyclictest1183-21ntpq3
921099279,16cyclictest26386-21rt-features3
921099278,16cyclictest27206-21missed_timers3
921099278,16cyclictest25496-21head3
921099277,17cyclictest2082-21systemd-journal3
921099277,17cyclictest11257-21cron3
921099276,5cyclictest26570-21gltestperf3
921099271,6cyclictest14396-21apt-get3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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