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2022-05-29 - 13:22

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 Sun May 29, 2022 00:43:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1757821230,3sleep20-21swapper/222:45:272
1757821230,3sleep20-21swapper/222:45:272
3217321210,4sleep20-21swapper/223:35:422
3217321210,4sleep20-21swapper/223:35:422
1472521160,8chrt33-21ksoftirqd/323:17:233
1472521160,8chrt33-21ksoftirqd/323:17:233
1541021110,2sleep227-21ksoftirqd/222:43:102
1541021110,2sleep227-21ksoftirqd/222:43:102
2479621010,2chrt0-21swapper/021:05:180
58582880,2chrt5857-21irqstats20:10:272
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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