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2025-11-24 - 06:57
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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 rack9slot2.osadl.org (updated Mon Nov 24, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
56502306271,22sleep30-21swapper/33
611699290269,19cyclictest20144-21munin-run3
610899258236,20cyclictest20166-21perf1
56132246180,25sleep10-21swapper/11
55892237178,46sleep20-21swapper/22
58702232194,25sleep00-21swapper/00
611299218197,19cyclictest20169-21apt-get2
610399218198,18cyclictest20189-21sendmail-mta0
179022610,2sleep3611699cyclictest3
201802600,1sleep10-21swapper/11
297342520,4sleep30-21swapper/33
611699360,33cyclictest18355-21kworker/3:03
94362290,4sleep0610399cyclictest0
6112992815,12cyclictest28-21ksoftirqd/22
6112992810,16cyclictest29274-21apt2
214392280,2sleep10-21swapper/11
6112992721,4cyclictest30571-21df_inode2
130612270,1sleep10-21swapper/11
6116992520,3cyclictest35-21ksoftirqd/33
6116992512,3cyclictest214382aten2_r9power_e3
611299233,17cyclictest9088-21cat2
611299232,18cyclictest32544-21apt-key2
6112992317,4cyclictest24523-21sendmail2
611299231,19cyclictest21145-21/usr/sbin/munin2
611299230,20cyclictest0-21swapper/22
6108992317,3cyclictest29269-21sh1
6108992315,6cyclictest30912-21cron1
6116992216,3cyclictest22144-21sh3
6116992215,4cyclictest2082-21systemd-journal3
6116992210,3cyclictest237842telnet3
611299223,17cyclictest30990-21cat2
611299222,17cyclictest31279-21latency_hist2
611299222,17cyclictest27543-21latency_hist2
611299222,17cyclictest24762-21cut2
6112992216,4cyclictest25560-21ls2
6112992212,8cyclictest665-21runrttasks2
6112992212,8cyclictest665-21runrttasks2
611299221,19cyclictest22222-21sendmail-mta2
611299221,18cyclictest21150-21munin-run2
611299221,18cyclictest11022-21grep2
6108992216,4cyclictest2168-21sed1
6108992214,5cyclictest12487-21grep1
611299214,15cyclictest505-21dbus-daemon2
611299213,16cyclictest7961-21cut2
611299212,17cyclictest13108-21procmail2
611299212,14cyclictest12665-21apt-get2
6112992116,3cyclictest8838-21processes2
6112992116,3cyclictest14626-21rt-features2
6112992115,4cyclictest6234-21df2
6112992114,5cyclictest16126-21cut2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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