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2023-01-27 - 16:09

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 alll highest latencies:
System rack4slot1.osadl.org (updated Fri Jan 27, 2023 07:15:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18204994014,23cyclictest12-21ksoftirqd/007:12:000
18204994014,23cyclictest12-21ksoftirqd/007:12:000
1820799293,17cyclictest0-21swapper/307:12:003
1820799293,17cyclictest0-21swapper/307:12:003
1820699231,18cyclictest18234-21taskset07:12:002
1820699231,18cyclictest18234-21taskset07:12:002
1820599191,16cyclictest19173-21grep07:12:141
1820599191,16cyclictest19173-21grep07:12:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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