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2023-06-08 - 23:21

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 Thu Jun 08, 2023 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1522911770,6ptp4l391rcuc/307:58:393
1522911770,6ptp4l391rcuc/307:58:393
1778021700,3sleep0173899cyclictest11:37:300
2140021460,4sleep2175199cyclictest10:31:552
152291870,1ptp4l391rcuc/309:47:373
152291830,1ptp4l391rcuc/309:57:433
152291820,1ptp4l391rcuc/311:47:283
152291820,1ptp4l391rcuc/309:07:583
152291800,1ptp4l391rcuc/310:22:193
152291780,1ptp4l391rcuc/312:22:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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