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2023-02-08 - 04:33

ARM Broadcom BCM2711 @1500 MHz, Linux 5.10.52-rt47-v7l (Profile)

Latency plot of system in rack #4, slot #1
Data to construct the above plot have been generated using the RT test utility cyclictest.
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 10 highest latencies:
System rack4slot1.osadl.org (updated Tue Feb 07, 2023 21:50:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1164021620,1sleep30-21swapper/321:27:343
1164021620,1sleep30-21swapper/321:27:343
3097921420,3sleep30-21swapper/321:48:453
1469121080,2sleep333-21ksoftirqd/320:32:303
1469121080,2sleep333-21ksoftirqd/320:32:303
863221030,3chrt0-21swapper/021:24:290
863221030,3chrt0-21swapper/021:24:290
1757521030,2sleep0151rcuc/020:42:120
26182940,1sleep012-21ksoftirqd/021:17:380
26182940,1sleep012-21ksoftirqd/021:17:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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