85 lines
2.4 KiB
Bash
Executable file
85 lines
2.4 KiB
Bash
Executable file
#! /bin/bash -u
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# Copyright 2015 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# This script first collects the addresses of the instructions being tracked by
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# the profile. After that, it calculates the offset of the addresses compared
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# to the base address and then gets the number of execution times for each
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# address. After that, it draws the heat map and the time map. A heap map shows
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# the overall hotness of instructions being executed while the time map shows the
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# hotness of instruction at different time.
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# binary : the name of the binary
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# profile : output of 'perf report -D'
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# loading_address : the loading address of the binary
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# page_size : the size to be displayed, usually 4096(byte).
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if [[ $# -ne 4 ]]; then
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echo 'Illegal number of parameters' exit 1
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fi
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binary=$1
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profile=$2
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loading_address=$3
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page_size=$4
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# size of binary supported.
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binary_maximum=1000000000
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if ! [[ -e $profile ]] ; then
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echo "error: profile does not exist" >&2; exit 1
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fi
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re='^[0-9]+$'
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if ! [[ $page_size =~ $re ]] ; then
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echo "error: page_size is not a number" >&2; exit 1
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fi
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function test {
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"$@"
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local status=$?
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if [ $status -ne 0 ]; then
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echo "error with $1" >&2
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fi
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return $status
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}
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HEAT_PNG="heat_map.png"
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TIMELINE_PNG="timeline.png"
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test grep -A 2 PERF_RECORD_SAMPLE $profile | grep -A 1 -B 1 "thread: $binary" | \
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grep -B 2 "dso.*$binary$" | awk -v base=$loading_address \
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"BEGIN { count=0; } /PERF_RECORD_SAMPLE/ {addr = strtonum(\$8) - strtonum(base); \
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if (addr < $binary_maximum) count++; \
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if (addr < $binary_maximum) print \$7,count,int(addr/$page_size)*$page_size}" > out.txt
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test awk '{print $3}' out.txt | sort -n | uniq -c > inst-histo.txt
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# generate inst heat map
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echo "
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set terminal png size 600,450
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set xlabel \"Instruction Virtual Address (MB)\"
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set ylabel \"Sample Occurance\"
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set grid
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set output \"${HEAT_PNG}\"
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set title \"Instruction Heat Map\"
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plot 'inst-histo.txt' using (\$2/1024/1024):1 with impulses notitle
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" | test gnuplot
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# generate instruction page access timeline
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num=$(awk 'END {print NR+1}' out.txt)
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echo "
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set terminal png size 600,450
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set xlabel \"time (sec)\"
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set ylabel \"Instruction Virtual Address (MB)\"
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set output \"${TIMELINE_PNG}\"
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set title \"instruction page accessd timeline\"
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plot 'out.txt' using (\$0/$num*10):(\$3/1024/1024) with dots notitle
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" | test gnuplot
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