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2025-11-29 - 06:47
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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 Sat Nov 29, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
112952278242,24sleep00-21swapper/00
112952278242,24sleep00-21swapper/00
113582277195,67sleep30-21swapper/33
113582277195,67sleep30-21swapper/33
112222232196,24sleep20-21swapper/22
112222232196,24sleep20-21swapper/22
113712230192,25sleep10-21swapper/11
113712230192,25sleep10-21swapper/11
1164799163157,4cyclictest12258-21apt-get0
1166099157152,3cyclictest12247-21perf2
1165599125117,5cyclictest12256-21awk1
1166299119113,4cyclictest12239-21sendmail3
213252520,1sleep30-21swapper/33
273652340,1sleep20-21swapper/22
1165599340,32cyclictest17063-21kworker/1:11
132692250,2sleep00-21swapper/00
187452240,3sleep1201rcuc/11
11662992417,4cyclictest4459-21cut3
11660992416,5cyclictest17706-21sh2
1166099241,4cyclictest31925-21idleruntime-cro2
1166099234,17cyclictest20341-21cat2
1166099234,17cyclictest0-21swapper/22
1166099231,4cyclictest11244-1kworker/2:1H2
1166099231,20cyclictest12051-21perf2
1166099231,19cyclictest16999-21sendmail2
1165599238,3cyclictest72262grep1
11647992311,10cyclictest10971-21avahi-daemon0
87012220,2sleep10-21swapper/11
11662992217,3cyclictest20482-21/usr/sbin/munin3
1166099228,12cyclictest22300-21cron2
1166099223,17cyclictest26916-21cat2
1166099221,4cyclictest1804-21latency_hist2
1166099221,4cyclictest11244-1kworker/2:1H2
1166099221,4cyclictest11244-1kworker/2:1H2
1166099221,3cyclictest24748-21idleruntime-cro2
11660992213,5cyclictest26100-21apt-get2
1166099221,18cyclictest3884-21munin-run2
1166099220,5cyclictest8565-21perf2
11655992215,4cyclictest25187-21seq1
11655992215,4cyclictest15733-21seq1
11655992214,5cyclictest17453-21cat1
11647992216,4cyclictest18317-21seq0
11647992215,4cyclictest2082-21systemd-journal0
11662992116,3cyclictest25155-21switchtime3
11662992116,3cyclictest16619-21grep3
11662992114,4cyclictest372-21cron3
11662992114,4cyclictest19497-21cat3
11662992111,6cyclictest11806-21apt-get3
1166099213,10cyclictest14830-21taskset2
1166099212,17cyclictest3319-21cat2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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