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2026-04-22 - 06:08
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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 100 highest latencies:
System rack9slot2.osadl.org (updated Wed Apr 22, 2026 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111282293209,69sleep30-21swapper/33
112592260204,44sleep20-21swapper/22
113782257189,37sleep10-21swapper/11
1157399255248,4cyclictest16243-21awk0
110882250184,24sleep00-21swapper/00
1158699228221,4cyclictest16247-21tr3
1157899178172,4cyclictest16240-21perf1
1826321570,2sleep21158399cyclictest2
1375621350,2sleep01157399cyclictest0
11583999993,4cyclictest0-21swapper/22
190902690,4sleep0512-21dbus-daemon0
289642640,3sleep00-21swapper/00
3782600,1sleep10-21swapper/11
101112590,2sleep10-21swapper/11
229022560,4sleep20-21swapper/22
145782510,1sleep10-21swapper/11
303612440,1sleep00-21swapper/00
1157399409,9cyclictest29491-21cat0
246412380,1sleep324644-21aten2_r9power_c3
11573993811,9cyclictest3493-21aten2.4-expect0
11573993810,10cyclictest917-21aten2.4-expect0
1157399377,9cyclictest12240-21cat0
11573993710,9cyclictest20555-21cat0
11573993612,9cyclictest12981-21perf0
11586993530,3cyclictest341rcuc/33
1157399356,16cyclictest0-21swapper/00
11573993511,8cyclictest1068-21munin-run0
1157399345,16cyclictest0-21swapper/00
1157399345,16cyclictest0-21swapper/00
1157399340,33cyclictest24932-21kworker/0:00
11586993329,2cyclictest341rcuc/33
1157399335,16cyclictest0-21swapper/00
1157399335,16cyclictest0-21swapper/00
1157399327,9cyclictest17727-21seq0
260192310,2sleep10-21swapper/11
1157399317,9cyclictest26166-21/usr/sbin/munin0
11586993026,2cyclictest341rcuc/33
1157399308,9cyclictest691-21cpuspeed_turbos0
1157399307,10cyclictest16743-21cpuspeed_turbos0
1157399306,8cyclictest0-21swapper/00
65612290,1sleep10-21swapper/11
1157399296,9cyclictest0-21swapper/00
1157399296,14cyclictest0-21swapper/00
1158699284,6cyclictest0-21swapper/33
11586992823,3cyclictest341rcuc/33
11586992811,5cyclictest35-21ksoftirqd/33
1157399285,9cyclictest0-21swapper/00
1157399285,8cyclictest0-21swapper/00
11573992810,15cyclictest27289-21grep0
324072270,2sleep10-21swapper/11
11586992711,3cyclictest35-21ksoftirqd/33
1157399275,8cyclictest0-21swapper/00
1157399273,9cyclictest0-21swapper/00
1158699260,7cyclictest35-21ksoftirqd/33
1158699260,7cyclictest35-21ksoftirqd/33
1157399265,8cyclictest0-21swapper/00
1157399265,8cyclictest0-21swapper/00
1157399264,7cyclictest0-21swapper/00
6562250,3sleep20-21swapper/22
1158699252,8cyclictest35-21ksoftirqd/33
11586992521,3cyclictest341rcuc/33
11586992521,2cyclictest341rcuc/33
1157399256,5cyclictest0-21swapper/00
1157399255,7cyclictest0-21swapper/00
1157399254,8cyclictest0-21swapper/00
1158699248,7cyclictest35-21ksoftirqd/33
11586992419,3cyclictest341rcuc/33
1158699241,6cyclictest35-21ksoftirqd/33
1157399246,5cyclictest683-21snmpd0
11573992415,5cyclictest7035-21apt-get0
1157399241,20cyclictest11421-21perf0
11573992411,10cyclictest29548-21cat0
1158699236,2cyclictest111rcu_preempt3
1158699233,8cyclictest0-21swapper/33
11586992320,2cyclictest341rcuc/33
11586992318,3cyclictest35-21ksoftirqd/33
11586992318,3cyclictest341rcuc/33
1158399233,18cyclictest14967-21latency_hist2
1158399233,17cyclictest7477-21cat2
1158399231,19cyclictest15849-21munin-run2
11573992315,5cyclictest882-21ls0
11573992313,6cyclictest16426-21apt-get0
1158699228,7cyclictest35-21ksoftirqd/33
1158699224,5cyclictest0-21swapper/33
1158699223,6cyclictest35-21ksoftirqd/33
1158699223,6cyclictest0-21swapper/33
1158699223,6cyclictest0-21swapper/33
1158699222,7cyclictest35-21ksoftirqd/33
1158699221,8cyclictest35-21ksoftirqd/33
11586992217,3cyclictest341rcuc/33
11586992212,4cyclictest35-21ksoftirqd/33
1158699220,6cyclictest35-21ksoftirqd/33
1158399223,17cyclictest6416-21latency_hist2
1158399223,17cyclictest14300-21cat2
1158399221,4cyclictest25618-21plymouth2
1157399224,7cyclictest0-21swapper/00
1157399222,7cyclictest0-21swapper/00
11573992215,4cyclictest512-21dbus-daemon0
11573992214,6cyclictest19950-21cron0
11573992214,5cyclictest516-21avahi-daemon0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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