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2026-05-04 - 01:26
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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 Sun May 03, 2026 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
71662274212,50sleep20-21swapper/22
72452261179,66sleep10-21swapper/11
72092254175,25sleep00-21swapper/00
72942253174,25sleep30-21swapper/33
760699208204,2cyclictest0-21swapper/33
760299203197,3cyclictest12282-21dump-pmu-power2
759799180174,3cyclictest512-21dbus-daemon1
758999122118,2cyclictest60750irq/130-enp2s00
114642630,2sleep30-21swapper/33
163432580,1sleep30-21swapper/33
229322500,3sleep1759799cyclictest1
38112410,1sleep10-21swapper/11
92222400,2sleep3760699cyclictest3
92222400,2sleep3760699cyclictest3
216442380,1sleep30-21swapper/33
129512370,1sleep00-21swapper/00
760699357,8cyclictest15741-21switchtime3
760699333,9cyclictest9496-21grep3
29722330,2sleep00-21swapper/00
760699314,9cyclictest8218-21seq3
758999310,29cyclictest29799-21kworker/0:00
760699304,7cyclictest0-21swapper/33
209832300,3sleep20-21swapper/22
760699294,10cyclictest4659-21apt-config3
760699294,10cyclictest25443-21ntp_states3
760699283,9cyclictest30767-21apt3
760699274,9cyclictest23189-21sed3
760699273,9cyclictest7695-21chrt3
760699273,10cyclictest6300-21chrt3
760699271,14cyclictest16187-21ps3
760699271,14cyclictest0-21swapper/33
760699271,13cyclictest18525-21/usr/sbin/munin3
760299274,20cyclictest8536-21munin-run2
760699263,9cyclictest5435-21chrt3
760699263,9cyclictest4894-21chrt3
760699263,9cyclictest28074-21proc_pri3
760699263,9cyclictest22543-21chrt3
760699254,6cyclictest0-21swapper/33
760699253,9cyclictest16047-21seq3
760699253,9cyclictest14405-21chrt3
760699253,6cyclictest0-21swapper/33
760699250,14cyclictest30862-21/usr/sbin/munin3
7602992511,3cyclictest111rcu_preempt2
7597992512,3cyclictest21-21ksoftirqd/11
63732250,7sleep3351ksoftirqd/33
760699244,6cyclictest0-21swapper/33
760699243,8cyclictest29860-21latency_hist3
760699243,6cyclictest0-21swapper/33
760699243,6cyclictest0-21swapper/33
760699242,9cyclictest28381-21chrt3
760699242,9cyclictest28381-21chrt3
760699242,9cyclictest22094-21chrt3
7606992410,11cyclictest32483-21grep3
760299245,17cyclictest16427-21sendmail2
760299244,17cyclictest8371-21cat2
7602992421,2cyclictest271rcuc/22
7602992415,8cyclictest271rcuc/22
760699233,7cyclictest0-21swapper/33
760699232,8cyclictest9259-21taskset3
760699232,8cyclictest8008-21/usr/sbin/munin3
760699230,9cyclictest0-21swapper/33
760299236,3cyclictest30655-21latency_hist2
7602992320,2cyclictest271rcuc/22
7602992320,2cyclictest271rcuc/22
7602992320,2cyclictest271rcuc/22
7602992319,2cyclictest271rcuc/22
760299231,19cyclictest17100-21munin-run2
760299230,6cyclictest8438-21taskset2
760299230,6cyclictest29789-21taskset2
760699223,6cyclictest0-21swapper/33
760699223,6cyclictest0-21swapper/33
760699221,6cyclictest0-21swapper/33
7606992212,6cyclictest26830-21munin-run3
7606992211,7cyclictest11395-21wc3
760299224,4cyclictest21230-21idleruntime-cro2
760299223,17cyclictest16232-21cat2
760299223,16cyclictest11356-21latency_hist2
7602992217,3cyclictest0-21swapper/22
7602992213,8cyclictest271rcuc/22
760299220,8cyclictest28-21ksoftirqd/22
760299220,6cyclictest5539-21taskset2
760299220,6cyclictest24508-21taskset2
760299220,6cyclictest2010-21taskset2
7597992216,4cyclictest7780-21idleruntime-cro1
760699219,6cyclictest458-21apt-get3
760699213,4cyclictest0-21swapper/33
760699212,6cyclictest0-21swapper/33
760699211,8cyclictest0-21swapper/33
7606992116,3cyclictest26587-21uname3
7606992112,5cyclictest6921-21apt-get3
760699210,8cyclictest0-21swapper/33
760299215,9cyclictest9443-21runrttasks2
760299214,15cyclictest28-21ksoftirqd/22
760299213,6cyclictest28-21ksoftirqd/22
760299212,6cyclictest28-21ksoftirqd/22
760299212,6cyclictest28-21ksoftirqd/22
760299212,17cyclictest19164-21cat2
7602992118,2cyclictest271rcuc/22
7602992117,3cyclictest271rcuc/22
7602992115,4cyclictest10124-21switchtime2
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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