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2025-07-12 - 11:05
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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 rackeslot5.osadl.org (updated Sat Jul 12, 2025 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1678599310,30cyclictest1310-21cron19:45:012
16789993027,2cyclictest611-21avahi-daemon00:25:003
1678599300,29cyclictest611-21avahi-daemon00:30:012
1678599300,29cyclictest29610-21cron20:45:002
16777993027,2cyclictest18745-21cron21:30:001
1677799300,29cyclictest17646-21munin-run20:20:011
1678999290,28cyclictest31650-21apt-get19:40:163
1678999290,28cyclictest28972-21apt-get23:00:023
1678999290,28cyclictest24062-21apt-get21:40:133
1678999290,28cyclictest0-21swapper/321:15:133
1678599290,28cyclictest23099-21cron23:55:012
1678599290,1cyclictest1-21systemd00:00:012
1677799290,28cyclictest0-21swapper/119:35:131
1677799290,28cyclictest0-21swapper/119:35:131
16775992927,2cyclictest2471-21sendmail-msp00:20:010
1677599290,28cyclictest8589-21apt-get20:00:140
1677599290,28cyclictest5602-21apt-get22:10:130
1677599290,28cyclictest22014-21munin-run22:45:010
1677599290,28cyclictest0-21swapper/019:40:170
16789992828,0cyclictest17552-21apt-get22:35:133
16789992827,1cyclictest22329-21perf20:29:593
16789992827,1cyclictest19039-21apt-get21:30:123
16789992826,1cyclictest12291-21cron22:25:003
1678999280,27cyclictest0-21swapper/322:40:153
1678999280,15cyclictest0-21swapper/322:51:323
1678999280,0cyclictest0-21swapper/322:30:133
1678999280,0cyclictest0-21swapper/319:15:023
16785992828,0cyclictest0-21swapper/200:00:142
1678599280,28cyclictest0-21swapper/219:45:162
1678599280,0cyclictest0-21swapper/219:55:162
16777992828,0cyclictest0-21swapper/100:15:141
1677799280,0cyclictest13228-21apt-get20:10:131
1677799280,0cyclictest0-21swapper/119:25:141
1677599280,0cyclictest0-21swapper/020:25:120
16789992725,1cyclictest609-21dbus-daemon20:00:013
1678999270,0cyclictest0-21swapper/323:40:113
1678999270,0cyclictest0-21swapper/300:30:143
16785992727,0cyclictest0-21swapper/223:20:122
16777992727,0cyclictest0-21swapper/119:10:121
16777992726,0cyclictest0-21swapper/121:45:121
16777992724,2cyclictest3637-21cron19:50:011
16775992727,0cyclictest0-21swapper/023:30:130
16775992727,0cyclictest0-21swapper/020:20:160
16775992727,0cyclictest0-21swapper/000:30:140
1677599270,27cyclictest0-21swapper/021:10:120
16789992626,0cyclictest26387-21apt-get21:45:123
16789992626,0cyclictest16999-21apt-get19:10:123
16785992626,0cyclictest0-21swapper/221:15:132
16785992626,0cyclictest0-21swapper/220:05:142
16785992626,0cyclictest0-21swapper/219:20:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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