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2024-04-17 - 01:55
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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 Tue Apr 16, 2024 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
150922327243,70sleep30-21swapper/33
1611899265260,3cyclictest18042-21perf2
159272264227,24sleep20-21swapper/22
158162256183,24sleep00-21swapper/00
157662255179,25sleep10-21swapper/11
3142721700,4sleep01611099cyclictest0
1611599159154,3cyclictest0-21swapper/11
1611099141136,3cyclictest18023-21munin-run0
2537921240,3sleep01611099cyclictest0
252572760,1sleep10-21swapper/11
124052540,1sleep00-21swapper/00
8222490,2sleep20-21swapper/22
1612199341,9cyclictest0-21swapper/33
1612199340,10cyclictest26949-21awk3
1612199330,9cyclictest7409-21sed3
1612199321,9cyclictest1336-21gltestperf3
1612199312,17cyclictest0-21swapper/33
1612199310,10cyclictest19482-21munin-run3
1612199301,7cyclictest0-21swapper/33
1612199300,8cyclictest0-21swapper/33
1612199291,11cyclictest15423-21cpuspeed_turbos3
1612199291,10cyclictest20545-21grep3
1612199290,8cyclictest21578-21latency_hist3
1612199290,17cyclictest0-21swapper/33
1612199281,15cyclictest0-21swapper/33
1612199280,9cyclictest21022-21sed3
1612199280,10cyclictest29095-21ls3
1612199270,9cyclictest0-21swapper/33
16115992718,6cyclictest19087-21cut1
1612199261,9cyclictest18324-21gpg-connect-age3
16121992612,6cyclictest292-21jbd2/mmcblk0p2-3
1612199261,11cyclictest2487-21cron3
1612199261,10cyclictest5358-21idleruntime-cro3
1612199261,10cyclictest29484-21perf3
1612199260,9cyclictest0-21swapper/33
1612199260,9cyclictest0-21swapper/33
1612199260,9cyclictest0-21swapper/33
1612199260,15cyclictest0-21swapper/33
1612199260,14cyclictest3062-21tr3
1612199260,10cyclictest11842-21grep3
1612199260,10cyclictest0-21swapper/33
1612199260,10cyclictest0-21swapper/33
1611899266,2cyclictest111rcu_preempt2
16118992620,4cyclictest18370-21irqstats2
180752250,4sleep11611599cyclictest1
1612199251,9cyclictest21835-21irqstats3
1612199251,9cyclictest1619-21needreboot3
1612199251,9cyclictest0-21swapper/33
1612199250,9cyclictest0-21swapper/33
1612199250,8cyclictest10360-21memory3
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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