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2025-04-02 - 08:16
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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 Wed Apr 02, 2025 00:44:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
35989712235180,17sleep50-21swapper/519:07:355
35968792224168,17sleep70-21swapper/719:05:207
35989872222170,41sleep30-21swapper/319:07:493
35989402221189,20sleep10-21swapper/119:07:061
35990012216189,17sleep60-21swapper/619:08:006
35989572216186,19sleep00-21swapper/019:07:210
35969232216185,20sleep40-21swapper/419:05:574
35990242214169,15sleep20-21swapper/219:08:202
3599355997119,24cyclictest0-21swapper/723:33:497
36372712550,0sleep60-21swapper/620:21:356
359934199310,3cyclictest3630032-21latency_hist20:05:014
359934199310,30cyclictest3639867-21turbostat.cron20:30:004
3599340993127,3cyclictest3619012-21sh19:45:013
359934099310,30cyclictest3726373-21idleruntime-cro23:35:013
359934099310,29cyclictest3645239-21latency_hist20:40:003
359933799310,30cyclictest3706025-21sh22:50:012
3599335993128,2cyclictest3599754-21apt-get19:11:351
3599330993127,3cyclictest3610935-21sh19:30:010
359935199300,29cyclictest3616310-21cron19:40:016
359935199300,29cyclictest0-21swapper/620:50:006
359934699300,29cyclictest3605544-21latency_hist19:20:015
359934699300,29cyclictest3602457-21munin-node19:15:015
3599341993027,2cyclictest3722925-21apt23:25:014
359934199300,29cyclictest3691071-21turbostat.cron22:15:014
3599337993026,3cyclictest3630034-21apt20:05:012
359933799300,29cyclictest3669724-21sh21:25:002
359933799300,29cyclictest0-21swapper/219:15:012
3599330993026,3cyclictest3664339-21idleruntime-cro21:15:000
359933099300,29cyclictest3621700-21dump-pmu-power19:50:010
359935599290,28cyclictest3643074-21apt-get20:36:337
359935599290,28cyclictest0-21swapper/719:50:017
359935599290,1cyclictest3681985-21dump-pmu-power21:55:017
3599351992927,1cyclictest3747534-21apt-get00:21:336
359935199290,28cyclictest0-21swapper/621:01:336
359935199290,1cyclictest0-21swapper/621:11:366
359934699290,1cyclictest3685209-21apt-get22:01:325
3599340992927,1cyclictest3676391-21apt-get21:41:333
3599340992927,1cyclictest3664861-21apt-get21:16:333
359934099290,28cyclictest0-21swapper/320:31:293
3599337992927,1cyclictest0-21swapper/220:16:352
3599337992927,1cyclictest0-21swapper/219:50:012
359933799290,28cyclictest0-21swapper/222:16:332
359933799290,28cyclictest0-21swapper/220:21:342
359933799290,1cyclictest796-21systemd-logind00:00:012
359933799290,1cyclictest0-21swapper/221:31:342
3599335992927,1cyclictest0-21swapper/121:41:331
3599335992927,1cyclictest0-21swapper/119:16:341
359933599290,28cyclictest3718057-21apt-get23:16:341
359933599290,1cyclictest3741628-21munin-run00:10:011
359933599290,1cyclictest0-21swapper/120:21:331
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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