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2026-01-01 - 08:08
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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 Dec 31, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
256002318282,24sleep20-21swapper/22
2590699286279,4cyclictest30281-21perf1
247542274183,74sleep10-21swapper/11
256362264209,38sleep30-21swapper/33
2591299262255,4cyclictest30258-21munin-run3
254252253185,56sleep00-21swapper/00
2590299209205,3cyclictest0-21swapper/00
1587621550,2sleep32591299cyclictest3
2590899112108,2cyclictest0-21swapper/22
177422530,2sleep20-21swapper/22
119182490,1sleep30-21swapper/33
18132480,1sleep30-21swapper/33
290022450,3sleep30-21swapper/33
2590299458,26cyclictest1110-21sendmail-mta0
2590299451,24cyclictest4205-21date0
2590299450,26cyclictest23611-21cat0
309322420,1sleep10-21swapper/11
2590299411,26cyclictest340-21systemd-journal0
2590299411,26cyclictest340-21systemd-journal0
2590299411,25cyclictest571-21gdbus0
2590299411,25cyclictest10495-21touch0
2590299411,24cyclictest515-21avahi-daemon0
2590299410,25cyclictest32584-21ls0
2590299410,20cyclictest9-21ksoftirqd/00
299692400,2sleep30-21swapper/33
2590299401,25cyclictest18121-21date0
2590299401,23cyclictest8343-21/usr/sbin/munin0
2590299400,30cyclictest29449-21sendmail-mta0
2590299400,24cyclictest7020-21cat0
2590299391,25cyclictest1774-21sendmail-mta0
2590299391,24cyclictest31849-21expr0
2590299391,24cyclictest24354-21uname0
2590299391,24cyclictest24354-21uname0
2590299390,25cyclictest25212-21dpkg0
2590299380,25cyclictest15031-21sendmail-mta0
2590299380,24cyclictest21671-21users0
2590299380,24cyclictest11958-21ntpq0
2590299370,34cyclictest24751-21cron0
2590299370,23cyclictest26392-21cpuspeed_turbos0
2590299370,23cyclictest26392-21cpuspeed_turbos0
2590299370,22cyclictest6854-21cat0
25902993615,19cyclictest21998-21tr0
2590299361,32cyclictest1242-21aten2.4-expect0
2590299360,23cyclictest23233-21sendmail-mta0
2590299360,21cyclictest4567-21ps0
2590299350,23cyclictest26028-21sendmail-mta0
2590299350,22cyclictest16353-21runrttasks0
2590299350,21cyclictest0-21swapper/00
2590299350,18cyclictest0-21swapper/00
2590299340,20cyclictest0-21swapper/00
25902993312,19cyclictest27459-21aten2_r9power_e0
25902993310,20cyclictest17129-21sendmail-mta0
2590299330,20cyclictest0-21swapper/00
2590299330,20cyclictest0-21swapper/00
2590299330,18cyclictest0-21swapper/00
2590299321,27cyclictest4227-21/usr/sbin/munin0
25902993212,17cyclictest18867-21/usr/sbin/munin0
25902993210,19cyclictest13064-21cat0
2590299319,19cyclictest9581-21cat0
2590299318,20cyclictest3658-21grep0
2590299318,20cyclictest13392-21sendmail-mta0
2590299317,21cyclictest30621-21sed0
2590299311,27cyclictest6727-21munin-run0
25902993111,18cyclictest26845-21basename0
25902993111,17cyclictest17925-21switchtime0
25902993110,19cyclictest18639-21df0
25902993110,18cyclictest31603-21wc0
2590299310,18cyclictest0-21swapper/00
2590299310,18cyclictest0-21swapper/00
2590299309,19cyclictest18331-21ls0
2590299309,18cyclictest518-21in:imuxsock0
2590299308,20cyclictest29327-21systemctl0
2590299301,26cyclictest24556-21/usr/sbin/munin0
56132290,2sleep20-21swapper/22
56132290,2sleep20-21swapper/22
25902992910,17cyclictest9722-21/usr/sbin/munin0
2590299290,26cyclictest7456-21gltestperf0
2590299290,26cyclictest2277-21latency_hist0
2590299287,18cyclictest307-21sh0
2590299281,24cyclictest26370-21/usr/sbin/munin0
25902992810,16cyclictest662-21runrttasks0
2590299280,25cyclictest22634-21cstates0
2590299275,20cyclictest11373-21apt-get0
2590299271,22cyclictest13135-21apt-get0
2590299270,24cyclictest8363-21switchtime0
156972270,1sleep2271rcuc/22
81312260,2sleep10-21swapper/11
2590299260,23cyclictest1567-21aten2_r9power_e0
2591299244,18cyclictest0-21swapper/33
219452240,1sleep20-21swapper/22
2591299239,12cyclictest662-21runrttasks3
2591299238,13cyclictest2007-21head3
2591299234,17cyclictest9333-21sendmail-mta3
2591299234,17cyclictest9333-21sendmail-mta3
2591299234,17cyclictest25893-21cyclictest3
2591299234,17cyclictest10969-21sendmail-mta3
2591299233,18cyclictest25345-21sendmail-mta3
2591299233,18cyclictest25345-21sendmail-mta3
2591299232,18cyclictest340-21systemd-journal3
2591299231,4cyclictest843-21munin-run3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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