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2025-12-11 - 11:54
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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 Thu Dec 11, 2025 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
315192314276,25sleep10-21swapper/11
313882287249,26sleep20-21swapper/22
313492283254,16sleep00-21swapper/00
316272277199,43sleep30-21swapper/33
3183599222218,2cyclictest0-21swapper/22
3182999174168,3cyclictest23221-21df1
3184099141137,2cyclictest0-21swapper/33
318259910699,4cyclictest0-21swapper/00
273392570,3sleep3341rcuc/33
307062540,4sleep230712-21gltestperf2
136772520,1sleep00-21swapper/00
155932500,1sleep00-21swapper/00
292582420,1sleep229259-21expr2
3182599399,9cyclictest17246-21date0
147372380,1sleep10-21swapper/11
31825993511,10cyclictest28797-21awk0
31825993410,9cyclictest3352-21awk0
3182599337,15cyclictest0-21swapper/00
3182599327,10cyclictest0-21swapper/00
3182599317,7cyclictest0-21swapper/00
3182599309,8cyclictest10313-21aten2_r9power_e0
3182599308,7cyclictest0-21swapper/00
3182599307,8cyclictest0-21swapper/00
3182599296,9cyclictest0-21swapper/00
3182599296,8cyclictest0-21swapper/00
31825992821,4cyclictest29591-21/usr/sbin/munin0
3182599274,9cyclictest0-21swapper/00
3182599269,14cyclictest2508-21/usr/sbin/munin0
31825992614,9cyclictest28611-21perf0
31825992611,11cyclictest5286-21apt-get0
3182599259,13cyclictest13753-21sort0
3182599256,7cyclictest566-21gpm0
31825992511,11cyclictest5160-21unixbench_multi0
3183599240,22cyclictest23328-21cupsd2
31825992412,10cyclictest9260-21apt0
31825992410,11cyclictest22098-21if_err_enp3s00
31840992317,3cyclictest15063-21cron3
31840992317,3cyclictest15063-21cron3
3183599236,15cyclictest28-21ksoftirqd/22
3183599231,4cyclictest10333-21gdbus2
31835992312,9cyclictest13918-21if_enp3s02
3183599231,19cyclictest993-21perf2
3183599231,19cyclictest16451-21munin-run2
31829992317,3cyclictest1572-21idleruntime-cro1
3182599239,12cyclictest665-21runrttasks0
3182599233,17cyclictest16422-21cron0
3182599233,17cyclictest16422-21cron0
31825992316,5cyclictest30629-21turbostat.cron0
31825992316,4cyclictest665-21runrttasks0
31825992315,6cyclictest0-21swapper/00
31825992314,7cyclictest1561-21cron0
31825992314,6cyclictest6319-21munin-run0
31825992313,7cyclictest26595-21cron0
31825992313,7cyclictest23262-21idleruntime-cro0
31825992312,8cyclictest30279-21aten2_r9power_p0
31825992312,8cyclictest2264-21munin-run0
31825992312,5cyclictest25547-21apt-get0
31825992311,9cyclictest18840-21basename0
31840992216,4cyclictest13082-21diskstats3
3184099220,9cyclictest292592expr3
3183599223,17cyclictest6659-21cat2
3183599223,17cyclictest1675-21cat2
3183599222,18cyclictest4349-21cat2
31835992215,4cyclictest7055-21sh2
3183599221,18cyclictest2082-21systemd-journal2
3183599221,17cyclictest19426-21apt-get2
3183599220,19cyclictest4915-21apt-key2
3182599229,11cyclictest10579-21/usr/sbin/munin0
3182599229,10cyclictest30341-21seq0
3182599228,11cyclictest665-21runrttasks0
31825992215,5cyclictest20972-21seq0
31825992214,6cyclictest22503-21cron0
31825992214,5cyclictest20033-21grep0
31825992213,6cyclictest8470-21cat0
31825992213,6cyclictest20807-21head0
31825992213,6cyclictest1198-21grep0
31825992213,5cyclictest8566-21apt-get0
31825992212,9cyclictest17164-21perf0
31825992212,6cyclictest27570-21apt-get0
31840992116,3cyclictest20353-21pmu-power3
31840992113,5cyclictest21151-21df3
3183599212,17cyclictest25491-21cat2
31835992114,4cyclictest31163-21cat2
31835992114,4cyclictest2583-21cat2
3183599211,3cyclictest4034-1kworker/2:1H2
3183599211,18cyclictest2494-21procmail2
3183599211,17cyclictest9999-21/usr/sbin/munin2
3183599210,4cyclictest4034-1kworker/2:1H2
31829992116,3cyclictest21-21ksoftirqd/11
31829992115,4cyclictest15554-21ntp_states1
31829992115,3cyclictest26860-21apt-get1
31829992114,4cyclictest3598-21cat1
31829992110,7cyclictest10973-21apt-get1
31825992115,4cyclictest12262-21grep0
31825992114,5cyclictest5268-21aten2_r9power_e0
31825992114,5cyclictest0-21swapper/00
31825992114,5cyclictest0-21swapper/00
31825992113,6cyclictest27601-21munin-run0
31825992113,6cyclictest25288-21munin-run0
31825992113,5cyclictest7999-21basename0
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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