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2025-12-04 - 03:50
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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 Thu Dec 04, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1772399270264,4cyclictest6810-21munin-run3
174292263189,26sleep10-21swapper/11
1771999259254,3cyclictest6837-21perf2
172672231182,36sleep20-21swapper/22
174332229192,25sleep00-21swapper/00
172632227191,24sleep30-21swapper/33
1770999178172,3cyclictest6857-21sendmail-msp0
1771199172165,4cyclictest6858-21awk1
2742921600,3sleep11771199cyclictest1
283121320,3sleep11771199cyclictest1
210032420,2sleep20-21swapper/22
1771199410,39cyclictest22336-21kworker/1:21
1771199410,39cyclictest22336-21kworker/1:21
26472370,2sleep20-21swapper/22
1771999350,6cyclictest28-21ksoftirqd/22
1771999350,33cyclictest22392-21kworker/2:22
1772399331,5cyclictest341rcuc/33
1772399321,6cyclictest341rcuc/33
17719993216,5cyclictest28-21ksoftirqd/22
17723993027,2cyclictest341rcuc/33
1772399294,6cyclictest35-21ksoftirqd/33
1772399293,6cyclictest35-21ksoftirqd/33
1772399293,6cyclictest35-21ksoftirqd/33
1772399291,6cyclictest341rcuc/33
1771999298,3cyclictest111rcu_preempt2
1772399281,5cyclictest35-21ksoftirqd/33
1772399280,5cyclictest35-21ksoftirqd/33
1771999289,3cyclictest28-21ksoftirqd/22
1771999287,4cyclictest28-21ksoftirqd/22
1771999286,4cyclictest28-21ksoftirqd/22
286652270,2sleep30-21swapper/33
1772399273,6cyclictest35-21ksoftirqd/33
1772399272,6cyclictest35-21ksoftirqd/33
1772399270,5cyclictest35-21ksoftirqd/33
17719992710,3cyclictest28-21ksoftirqd/22
1770999270,26cyclictest25321-21kworker/0:20
17723992623,2cyclictest341rcuc/33
1772399261,7cyclictest35-21ksoftirqd/33
1772399260,8cyclictest35-21ksoftirqd/33
1772399260,6cyclictest341rcuc/33
1772399260,12cyclictest35-21ksoftirqd/33
17719992611,5cyclictest28-21ksoftirqd/22
17719992611,5cyclictest28-21ksoftirqd/22
17719992611,3cyclictest28-21ksoftirqd/22
17719992611,2cyclictest111rcu_preempt2
17719992610,3cyclictest111rcu_preempt2
17711992615,6cyclictest3505-21apt-get1
1772399255,9cyclictest35-21ksoftirqd/33
1772399254,9cyclictest35-21ksoftirqd/33
1772399253,7cyclictest35-21ksoftirqd/33
1772399253,5cyclictest35-21ksoftirqd/33
1772399252,6cyclictest35-21ksoftirqd/33
17723992519,4cyclictest24606-21cron3
1772399251,6cyclictest35-21ksoftirqd/33
1772399250,7cyclictest35-21ksoftirqd/33
1772399250,6cyclictest35-21ksoftirqd/33
1772399250,4cyclictest35-21ksoftirqd/33
17719992511,12cyclictest28-21ksoftirqd/22
17719992510,3cyclictest28-21ksoftirqd/22
1772399243,6cyclictest35-21ksoftirqd/33
17723992421,2cyclictest341rcuc/33
17723992421,2cyclictest341rcuc/33
1772399241,7cyclictest35-21ksoftirqd/33
1772399241,5cyclictest35-21ksoftirqd/33
1772399240,7cyclictest35-21ksoftirqd/33
1772399240,7cyclictest35-21ksoftirqd/33
1772399240,7cyclictest35-21ksoftirqd/33
1772399240,7cyclictest35-21ksoftirqd/33
1772399240,6cyclictest35-21ksoftirqd/33
1772399240,6cyclictest35-21ksoftirqd/33
1772399240,6cyclictest21892-21switchtime3
1772399240,6cyclictest21892-21switchtime3
1772399240,5cyclictest341rcuc/33
1771999247,3cyclictest28-21ksoftirqd/22
1771999246,16cyclictest507-21cron2
1771999245,3cyclictest28-21ksoftirqd/22
1771999245,3cyclictest28-21ksoftirqd/22
17719992414,2cyclictest28-21ksoftirqd/22
17719992411,4cyclictest30243-21taskset2
17719992410,3cyclictest28-21ksoftirqd/22
17719992410,2cyclictest111rcu_preempt2
17719992410,2cyclictest111rcu_preempt2
63302230,1sleep16331-21aten2_r9power_v1
1772399232,7cyclictest35-21ksoftirqd/33
1772399232,7cyclictest35-21ksoftirqd/33
1772399232,6cyclictest35-21ksoftirqd/33
17723992318,3cyclictest341rcuc/33
1772399231,6cyclictest35-21ksoftirqd/33
1772399231,6cyclictest0-21swapper/33
1772399231,6cyclictest0-21swapper/33
1772399230,8cyclictest35-21ksoftirqd/33
1772399230,6cyclictest35-21ksoftirqd/33
1771999239,4cyclictest28-21ksoftirqd/22
1771999239,3cyclictest28-21ksoftirqd/22
1771999238,3cyclictest28-21ksoftirqd/22
1771999238,3cyclictest28-21ksoftirqd/22
1771999238,3cyclictest28-21ksoftirqd/22
1771999235,4cyclictest28-21ksoftirqd/22
1771999231,2cyclictest28-21ksoftirqd/22
17719992312,9cyclictest25042-21if_enp3s02
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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