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2023-04-02 - 10:13

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 376 highest latencies:
System rack4slot1.osadl.org (updated Sat Apr 01, 2023 07:20:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1431099234225,6cyclictest16078-21apt-get07:18:032
1431099234225,6cyclictest16078-21apt-get07:18:032
1446521090,2chrt14463-21/usr/sbin/munin07:13:131
1446521090,2chrt14463-21/usr/sbin/munin07:13:131
14308995331,9cyclictest12-21ksoftirqd/007:18:190
14308995331,9cyclictest12-21ksoftirqd/007:18:190
14310992315,4cyclictest27-21ksoftirqd/207:18:232
14310992315,4cyclictest27-21ksoftirqd/207:18:232
1431199213,11cyclictest0-21swapper/307:18:043
1431199213,11cyclictest0-21swapper/307:18:043
14308992011,5cyclictest5552-1kworker/u9:207:18:030
14308992011,5cyclictest5552-1kworker/u9:207:18:030
1430999196,11cyclictest21-21ksoftirqd/107:18:341
1430999196,11cyclictest21-21ksoftirqd/107:18:341
1431199182,11cyclictest0-21swapper/307:18:163
1431199182,11cyclictest0-21swapper/307:18:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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