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2025-07-13 - 10:01
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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 rack8slot4.osadl.org (updated Sun Jul 13, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38383662236178,47sleep30-21swapper/319:06:553
38382242226168,18sleep60-21swapper/619:06:336
38384232222190,20sleep40-21swapper/419:07:444
38384982221164,18sleep50-21swapper/519:08:495
38363682219190,18sleep70-21swapper/719:06:027
38385642215171,33sleep20-21swapper/219:09:432
38384462215163,17sleep00-21swapper/019:08:040
38383552213184,18sleep10-21swapper/119:06:441
3838968996315,24cyclictest0-21swapper/421:53:274
3838956993629,6cyclictest1202534-21systemd-journal00:20:011
383895999330,28cyclictest0-21swapper/223:51:192
383896499320,28cyclictest0-21swapper/322:06:203
383895699320,29cyclictest0-21swapper/119:41:211
383897899310,29cyclictest0-21swapper/719:50:017
383897199310,29cyclictest3842823-21sensors19:15:025
383896899310,29cyclictest3847958-21turbostat.cron19:25:014
3838964993127,3cyclictest1202534-21systemd-journal20:05:013
3838964993127,3cyclictest0-21swapper/323:51:193
383896499310,1cyclictest3916026-21apt-get21:31:173
383895699310,3cyclictest3905255-21apt-get21:11:181
3838952993127,3cyclictest3939745-21sh22:15:000
383897899300,29cyclictest3841625-21turbostat.cron19:15:017
383897899300,29cyclictest0-21swapper/719:56:207
3838974993028,1cyclictest0-21swapper/620:35:016
383897499300,30cyclictest3841808-21cat19:15:016
383897199300,2cyclictest4015423-21sh00:35:015
383897199300,29cyclictest1202534-21systemd-journal22:35:005
383896499300,29cyclictest3970135-21apt-get23:11:173
3838959993027,2cyclictest0-21swapper/219:36:202
3838959993025,4cyclictest4007876-21apt-get00:21:212
3838956993028,1cyclictest0-21swapper/120:10:011
3838956993025,4cyclictest3918717-21apt-get21:36:191
383895299300,30cyclictest3888326-21dump-pmu-power20:40:010
383895299300,29cyclictest3978222-21apt-get23:26:190
3838978992927,1cyclictest3942970-21apt-get22:21:207
3838978992927,1cyclictest3921425-21apt-get21:41:217
383897899290,28cyclictest0-21swapper/721:51:217
383897899290,28cyclictest0-21swapper/719:41:217
383897899290,1cyclictest0-21swapper/722:20:007
383897499290,28cyclictest0-21swapper/621:36:196
383897499290,1cyclictest3874865-21idleruntime-cro20:15:016
3838971992927,1cyclictest3888848-21apt-get20:41:195
383897199290,28cyclictest3945659-21apt-get22:26:235
383897199290,28cyclictest3842027-21munin-node19:15:015
383897199290,28cyclictest0-21swapper/520:46:195
383897199290,1cyclictest3882934-21cron20:30:015
383897199290,1cyclictest0-21swapper/522:01:205
3838968992927,2cyclictest3958602-21idleruntime-cro22:50:004
383896899290,28cyclictest0-21swapper/421:56:194
383896899290,1cyclictest1202534-21systemd-journal20:00:014
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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