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2026-06-09 - 19:37
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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 rackeslot2.osadl.org (updated Tue Jun 09, 2026 12:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
141202721440,2sleep30-21swapper/309:55:293
160270921040,2sleep01602712-21gltestperf12:10:290
14108692980,2sleep30-21swapper/309:55:013
12532072900,2sleep20-21swapper/207:55:022
15477102430,1sleep01547714-21tr11:30:250
12235332330,2sleep30-21swapper/307:30:263
13535152310,1sleep00-21swapper/009:15:310
1196053993018,7cyclictest0-21swapper/012:20:010
1196054992320,2cyclictest1425487-21systemd-run10:05:001
119605399220,4cyclictest1224040-21ps07:30:290
1196055992113,1cyclictest0-21swapper/208:50:012
1196053992118,2cyclictest1373866-21latency_hist09:30:010
119605399211,16cyclictest1438851-21awk10:10:360
1196053992110,6cyclictest0-21swapper/010:50:240
119605399210,5cyclictest1308327-21/usr/sbin/munin08:40:270
1196054992017,2cyclictest1491976-21systemd-run10:50:011
1196054992017,2cyclictest1477302-21/usr/sbin/munin10:40:011
1196054992013,3cyclictest1359351-21sh09:20:031
1196054992013,2cyclictest0-21swapper/110:40:031
119605399209,6cyclictest0-21swapper/010:25:360
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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