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2025-04-26 - 09:29
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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 Sat Apr 26, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
220702313264,36sleep20-21swapper/22
219452307270,24sleep30-21swapper/33
22285992901,285cyclictest26822-21systemctl3
219032289256,22sleep10-21swapper/11
22277992871,4cyclictest26797-21sendmail2
219672245178,54sleep00-21swapper/00
2226999150145,3cyclictest26821-21basename0
222729910398,3cyclictest26818-21dpkg1
160902630,4sleep32228599cyclictest3
22285994811,17cyclictest26461-21date3
138972460,2sleep228-21ksoftirqd/22
159492450,1sleep10-21swapper/11
22285994416,11cyclictest28801-21grep3
2227299419,18cyclictest17029-21seq1
22272994116,16cyclictest0-21swapper/11
115042390,2sleep1201rcuc/11
22285993813,10cyclictest5548-21taskset3
22285993813,10cyclictest27735-21cat3
22285993713,10cyclictest16168-21chrt3
22285993711,10cyclictest4697-21sed3
22285993711,10cyclictest4697-21sed3
22285993613,10cyclictest13250-21chrt3
22285993612,9cyclictest19058-21chrt3
22285993612,10cyclictest1712-21chrt3
22285993611,10cyclictest2326-21apt-config3
2228599357,9cyclictest0-21swapper/33
2228599355,17cyclictest0-21swapper/33
22285993512,9cyclictest21366-21chrt3
22285993512,9cyclictest12273-21chrt3
22285993512,8cyclictest32312-21cat3
22285993512,8cyclictest17053-21chrt3
22285993512,10cyclictest21071-21chrt3
22285993511,10cyclictest1563-21chrt3
2228599347,15cyclictest0-21swapper/33
22285993412,9cyclictest8741-21chrt3
22285993412,9cyclictest18959-21chrt3
22285993411,9cyclictest32715-21chrt3
22285993411,9cyclictest31097-21latency_hist3
22285993411,10cyclictest31006-21chrt3
22285993410,10cyclictest4901-21taskset3
2227799348,14cyclictest6547-21grep2
2228599335,16cyclictest0-21swapper/33
22285993313,17cyclictest22848-21pmu-power3
22285993311,9cyclictest28147-21chrt3
22285993311,9cyclictest24075-21chrt3
22285993310,9cyclictest0-21swapper/33
22285993310,8cyclictest16115-21apt-get3
22285993310,8cyclictest16115-21apt-get3
22285993211,8cyclictest31417-21taskset3
22285993210,9cyclictest29091-21taskset3
22285993210,9cyclictest11155-21chrt3
2227799325,8cyclictest17894-21apt-get2
2227799324,15cyclictest7719-21apt-get2
2227299320,1cyclictest0-21swapper/11
2228599319,8cyclictest7792-21latency_hist3
22285993110,9cyclictest487-21chrt3
2227799317,9cyclictest17413-21apt-config2
2227799314,9cyclictest6923-21apt-get2
2226999310,29cyclictest4226-21kworker/0:00
2228599308,9cyclictest0-21swapper/33
2228599305,8cyclictest0-21swapper/33
22285993019,8cyclictest14443-21munin-run3
2227799309,8cyclictest29994-21taskset2
2227799306,9cyclictest0-21swapper/22
2227799305,9cyclictest21887-21apt-get2
2227799302,16cyclictest0-21swapper/22
22272993013,14cyclictest8646-21seq1
2227299301,26cyclictest4176-21sed1
2227299301,26cyclictest4176-21sed1
22272993012,15cyclictest9406-21ls1
22272993012,15cyclictest5572-21uname1
2227299300,1cyclictest0-21swapper/11
37822290,10sleep09-21ksoftirqd/00
37822290,10sleep09-21ksoftirqd/00
2228599298,7cyclictest13306-21turbostat3
2228599295,9cyclictest0-21swapper/33
2228599291,11cyclictest0-21swapper/33
2227799297,8cyclictest19311-21http2
2227799296,8cyclictest0-21swapper/22
2227799295,9cyclictest0-21swapper/22
2227799295,8cyclictest794-21apt-get2
2227799295,7cyclictest22473-21apt-get2
2227799294,9cyclictest10699-21apt-get2
2227799294,8cyclictest19632-21apt-get2
22277992917,7cyclictest26803-21awk2
2227299291,25cyclictest19781-21tail1
22272992910,16cyclictest12641-21seq1
22285992818,5cyclictest25092-21awk3
22285992817,8cyclictest10809-21cron3
22285992817,7cyclictest9816-21munin-run3
2227799287,18cyclictest25613-21cron2
2227799284,8cyclictest29987-21apt-get2
2227799284,8cyclictest16699-21apt-get2
2227799284,8cyclictest16699-21apt-get2
22277992816,6cyclictest9748-21apt-get2
2227299289,16cyclictest27327-21seq1
2227299288,17cyclictest26322-21seq1
2227299287,18cyclictest23730-21grep1
22272992810,15cyclictest505-21dbus-daemon1
2227299280,1cyclictest0-21swapper/11
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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