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2023-02-08 - 04:30

x86 Intel Atom E3845 @1915 MHz, Linux 4.19.37-rt20 (Profile)

Latency plot of system in rack #b, slot #6
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 rackbslot6.osadl.org (updated Wed Feb 08, 2023 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
70624200,5sleep10-21swapper/123:35:561
911911200,8ptp4l25690-21kworker/3:023:38:113
295742670,3sleep329578-21unixbench_multi04:41:223
91191660,7ptp4l401ktimersoftd/303:38:163
137822660,3sleep2265999cyclictest02:00:352
112902650,4sleep211289-21sed03:46:112
91191630,1ptp4l401ktimersoftd/300:13:273
91191620,1ptp4l401ktimersoftd/304:46:193
91191620,1ptp4l401ktimersoftd/303:05:043
91191610,1ptp4l401ktimersoftd/302:52:223
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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