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2025-12-31 - 07:32
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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 Dec 31, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
69042292248,33sleep10-21swapper/11
83062289232,45sleep20-21swapper/22
82072265227,25sleep30-21swapper/33
84142251177,61sleep00-21swapper/00
862599200194,4cyclictest13557-21strings0
863699158154,2cyclictest0-21swapper/33
863299138134,2cyclictest0-21swapper/22
158521320,2sleep2863299cyclictest2
8629999692,2cyclictest0-21swapper/11
862999430,32cyclictest27374-21seq1
155172420,2sleep00-21swapper/00
862999381,28cyclictest28723-21sendmail-mta1
862999381,22cyclictest13064-21taskset1
862999381,22cyclictest13064-21taskset1
862999380,24cyclictest12806-21sed1
862999380,22cyclictest27253-21chrt1
862999370,24cyclictest515-21avahi-daemon1
862999370,23cyclictest3439-21chrt1
862999370,21cyclictest3188-21runrttasks1
862999360,22cyclictest19311-21chrt1
862999342,29cyclictest571-21gdbus1
862999341,30cyclictest553-21grep1
862999341,30cyclictest4437-21needreboot1
862999341,30cyclictest28928-21grep1
8629993412,20cyclictest18069-21expr1
8629993412,19cyclictest32211-21aten2_r9power_c1
862999340,31cyclictest340-21systemd-journal1
862999332,28cyclictest340-21systemd-journal1
8629993313,18cyclictest24661-21/usr/sbin/munin1
8629993313,18cyclictest24661-21/usr/sbin/munin1
8629993313,17cyclictest11921-21cut1
8629993312,19cyclictest29674-21cut1
8629993311,19cyclictest2928-21forks1
8629993310,20cyclictest21865-21cat1
8629993310,20cyclictest20804-21sed1
8629993212,17cyclictest4526-21/usr/sbin/munin1
8629993211,18cyclictest28361-21sendmail-mta1
8629993211,18cyclictest15557-21aten2_r9power_e1
8629993210,20cyclictest23697-21/usr/sbin/munin1
8629993210,19cyclictest31624-21cron1
862999318,21cyclictest4851-21sendmail-mta1
8629993113,16cyclictest422-21aten2.4-expect1
8629993112,17cyclictest7029-21latency_hist1
8629993111,18cyclictest18260-21latency_hist1
8629993111,17cyclictest7300-21/usr/sbin/munin1
8629993111,17cyclictest5933-21/usr/sbin/munin1
8629993111,17cyclictest12371-21/usr/sbin/munin1
862999309,19cyclictest20799-21cat1
862999309,18cyclictest26371-21grep1
862999309,18cyclictest13466-21sort1
862999308,20cyclictest20763-21cat1
862999308,19cyclictest340-21systemd-journal1
862999308,19cyclictest24631-21sendmail-mta1
862999307,20cyclictest32450-21sendmail-mta1
8629993010,17cyclictest14491-21aten2_r9power_e1
862999300,27cyclictest9102-21/usr/sbin/munin1
862999300,1cyclictest0-21swapper/11
862999298,19cyclictest29341-21cat1
862999298,18cyclictest8246-21sendmail-mta1
862999298,18cyclictest1797-21latency1
862999293,23cyclictest12329-21sendmail-mta1
862999292,22cyclictest10264-21ntp_states1
862999291,23cyclictest3880-21apt-get1
862999291,23cyclictest18885-21apt-get1
863699281,20cyclictest0-21swapper/33
862999287,18cyclictest31800-21sendmail-mta1
862999287,18cyclictest24502-21grep1
862999285,20cyclictest340-21systemd-journal1
862999285,20cyclictest11987-21sendmail-mta1
862999282,22cyclictest0-21swapper/11
862999281,24cyclictest17739-21/usr/sbin/munin1
862999280,25cyclictest9339-21grep1
862999280,25cyclictest20906-21acpi1
8636992717,6cyclictest29620-21perf3
863699271,21cyclictest15939-21perf3
862999278,16cyclictest76622chrt1
862999278,16cyclictest76622chrt1
862999270,24cyclictest15779-21tr1
862999270,24cyclictest13721-21grep1
862999270,1cyclictest0-21swapper/11
863699267,17cyclictest0-21swapper/33
863699266,17cyclictest0-21swapper/33
863699265,17cyclictest0-21swapper/33
863699261,22cyclictest9807-21idleruntime-cro3
862999260,23cyclictest14189-21aten2_r9power_e1
61152260,2sleep00-21swapper/00
183222260,3sleep2271rcuc/22
117372260,1sleep20-21swapper/22
117372260,1sleep20-21swapper/22
863699254,4cyclictest0-21swapper/33
863699254,3cyclictest0-21swapper/33
863699254,18cyclictest16072-21sendmail-mta3
8636992513,7cyclictest7756-21perf3
214652250,4sleep0101rcuc/00
199492250,1sleep30-21swapper/33
863699244,18cyclictest5245-21sendmail-mta3
863699244,17cyclictest6402-21cat3
863699244,17cyclictest23314-21sendmail-mta3
863699243,18cyclictest28361-21sendmail-mta3
863699243,18cyclictest13039-21sendmail-mta3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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