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2025-09-14 - 05:37
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot5.osadl.org (updated Sun Sep 14, 2025 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8816993028,1cyclictest17010-21latency_hist00:00:023
8816993028,1cyclictest0-21swapper/319:30:023
881699300,29cyclictest609-21dbus-daemon23:35:003
881699300,29cyclictest609-21dbus-daemon22:05:003
8807993027,2cyclictest7342-21sh20:15:020
881499290,28cyclictest22089-21apt-get00:10:142
881499290,28cyclictest21403-21apt-get23:00:152
881499290,28cyclictest19054-21apt-get22:55:132
881499290,28cyclictest12027-21apt-get22:40:142
881499290,28cyclictest0-21swapper/223:55:132
881099290,28cyclictest10584-21munin-run21:30:001
881099290,28cyclictest0-21swapper/123:55:121
881099290,28cyclictest0-21swapper/121:50:141
881099290,28cyclictest0-21swapper/119:25:161
8807992927,1cyclictest303-21systemd-journal20:05:020
8807992927,1cyclictest23193-21munin-run19:40:000
8807992927,1cyclictest0-21swapper/020:29:590
880799290,28cyclictest0-21swapper/020:20:010
880799290,28cyclictest0-21swapper/019:30:160
8816992828,0cyclictest0-21swapper/323:05:143
8814992827,1cyclictest8226-21cron21:25:012
881499280,0cyclictest21113-21apt-get19:35:152
881499280,0cyclictest0-21swapper/223:25:132
881099280,0cyclictest30730-21sendmail-msp23:20:011
881099280,0cyclictest0-21swapper/122:35:011
881099280,0cyclictest0-21swapper/121:10:121
8807992824,3cyclictest31717-21apt-get00:30:140
8807992824,3cyclictest0-21swapper/021:10:110
880799280,3cyclictest0-21swapper/023:50:140
880799280,28cyclictest0-21swapper/022:55:120
880799280,1cyclictest30749-21perf23:20:010
8816992727,0cyclictest30171-21perf19:55:013
8816992727,0cyclictest0-21swapper/321:50:133
8816992727,0cyclictest0-21swapper/321:25:143
8816992727,0cyclictest0-21swapper/321:00:163
8816992727,0cyclictest0-21swapper/319:55:143
8814992727,0cyclictest9681-21apt-get22:35:132
8814992727,0cyclictest0-21swapper/223:50:162
8814992727,0cyclictest0-21swapper/222:00:142
8814992727,0cyclictest0-21swapper/200:00:122
881499270,0cyclictest0-21swapper/220:10:092
8810992727,0cyclictest0-21swapper/123:00:131
8810992727,0cyclictest0-21swapper/122:50:141
8810992727,0cyclictest0-21swapper/119:35:011
8810992727,0cyclictest0-21swapper/100:35:161
881099270,27cyclictest0-21swapper/123:10:131
8807992727,0cyclictest0-21swapper/023:45:150
8807992727,0cyclictest0-21swapper/023:20:150
8807992727,0cyclictest0-21swapper/023:00:140
8807992725,1cyclictest29839-21apt-get22:10:120
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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