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https://github.com/toradex/rt-validation.git
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bd2dadcf93
Running the test for 12h is too long in some cases. It would be better if the duration of the test could be set from outside. With the new environment variable DURATION a user can control the value of the parameter `-D` of cyclictest and set the desired value.
64 lines
1.5 KiB
Bash
Executable File
64 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
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# Run cyclictest
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if ! cyclictest -S -p99 -i1000 -m -D${DURATION:-12h} -h400 -q >output; then
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echo "ERROR: cyclictest failed" >&2
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exit 1
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fi
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# Get maximum latency
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max=`grep "Max Latencies" output | tr " " "\n" | sort -n | tail -1 | sed s/^0*//`
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# Grep data lines, remove empty lines and create a common field separator
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grep -v -e "^#" -e "^$" output | tr " " "\t" >histogram
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# Create two-column data sets with latency classes and frequency values for each core
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cores=$(grep -c ^processor /proc/cpuinfo)
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for i in `seq 1 $cores`
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do
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column=`expr $i + 1`
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cut -f1,$column histogram >histogram$i
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done
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# Create plot command header
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echo -n -e "set title \"Latency plot\"\n\
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set terminal png\n\
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set xlabel \"Latency (us), max $max us\"\n\
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set logscale y\n\
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set xrange [0:400]\n\
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set yrange [0.8:*]\n\
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set ylabel \"Number of latency samples\"\n\
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set output \"plot.png\"\n\
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plot " >plotcmd
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# Append plot command data references
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for i in `seq 1 $cores`
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do
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if test $i != 1
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then
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echo -n ", " >>plotcmd
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fi
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cpuno=`expr $i - 1`
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if test $cpuno -lt 10
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then
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title=" CPU$cpuno"
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else
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title="CPU$cpuno"
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fi
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echo -n "\"histogram$i\" using 1:2 title \"$title\" with histeps" >>plotcmd
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done
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# Execute plot command
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gnuplot -persist <plotcmd
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# Print summary to /tmp
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echo "Generating latency summary to /tmp/latency-summary.log"
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grep -e "^#" output >/tmp/latency-summary.log
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# Copy plot to /tmp/latency-plot.png
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echo "Generating latency plot to /tmp/latency-plot.png"
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cp plot.png /tmp/latency-plot.png
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# Clean up
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rm -f histogram* output plotcmd plot.png
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