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2026-01-05 - 15:01
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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 20 highest latencies:
System rack5slot2.osadl.org (updated Mon Jan 05, 2026 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40892199183,11sleep10-21swapper/119:05:331
40982191175,12sleep00-21swapper/019:05:410
43312187172,11sleep30-21swapper/319:08:403
43402181164,13sleep20-21swapper/219:08:472
1833290,0sleep00-21swapper/023:20:210
17695290,0sleep10-21swapper/119:35:011
46319983,5cyclictest7372-21awk23:35:000
46319981,3cyclictest4898-21awk23:30:000
46369960,5cyclictest0-21swapper/200:00:142
46319961,5cyclictest19734-21munin-run00:00:010
46319960,3cyclictest7716-21sendmail-msp20:20:000
46419953,1cyclictest19983-21munin-run22:55:013
46419950,4cyclictest7589-21apt-get23:35:123
46419950,4cyclictest0-21swapper/300:00:153
46369950,5cyclictest5352-21apt-get22:25:012
46369950,2cyclictest0-21swapper/200:10:152
46329951,2cyclictest0-21swapper/121:15:131
46329951,2cyclictest0-21swapper/119:45:091
46329950,5cyclictest0-21swapper/121:30:171
46319952,2cyclictest0-21swapper/022:15:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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