1#! /bin/bash -u 2# Copyright 2015 The Chromium OS Authors. All rights reserved. 3# Use of this source code is governed by a BSD-style license that can be 4# found in the LICENSE file. 5 6# This script first collects the addresses of the instructions being tracked by 7# the profile. After that, it calculates the offset of the addresses compared 8# to the base address and then gets the number of execution times for each 9# address. After that, it draws the heat map and the time map. A heap map shows 10# the overall hotness of instructions being executed while the time map shows the 11# hotness of instruction at different time. 12 13# binary : the name of the binary 14# profile : output of 'perf report -D' 15# loading_address : the loading address of the binary 16# page_size : the size to be displayed, usually 4096(byte). 17 18if [[ $# -ne 4 ]]; then 19 echo 'Illegal number of parameters' exit 1 20fi 21 22binary=$1 23profile=$2 24loading_address=$3 25page_size=$4 26 27# size of binary supported. 28binary_maximum=1000000000 29 30if ! [[ -e $profile ]] ; then 31 echo "error: profile does not exist" >&2; exit 1 32fi 33 34re='^[0-9]+$' 35if ! [[ $page_size =~ $re ]] ; then 36 echo "error: page_size is not a number" >&2; exit 1 37fi 38 39function test { 40 "$@" 41 local status=$? 42 if [ $status -ne 0 ]; then 43 echo "error with $1" >&2 44 fi 45 return $status 46} 47 48HEAT_PNG="heat_map.png" 49TIMELINE_PNG="timeline.png" 50 51test grep -A 2 PERF_RECORD_SAMPLE $profile | grep -A 1 -B 1 "thread: $binary" | \ 52grep -B 2 "dso.*$binary$" | awk -v base=$loading_address \ 53 "BEGIN { count=0; } /PERF_RECORD_SAMPLE/ {addr = strtonum(\$8) - strtonum(base); \ 54 if (addr < $binary_maximum) count++; \ 55 if (addr < $binary_maximum) print \$7,count,int(addr/$page_size)*$page_size}" > out.txt 56 57 58test awk '{print $3}' out.txt | sort -n | uniq -c > inst-histo.txt 59 60# generate inst heat map 61echo " 62set terminal png size 600,450 63set xlabel \"Instruction Virtual Address (MB)\" 64set ylabel \"Sample Occurance\" 65set grid 66 67set output \"${HEAT_PNG}\" 68set title \"Instruction Heat Map\" 69 70plot 'inst-histo.txt' using (\$2/1024/1024):1 with impulses notitle 71" | test gnuplot 72 73# generate instruction page access timeline 74num=$(awk 'END {print NR+1}' out.txt) 75 76echo " 77set terminal png size 600,450 78set xlabel \"time (sec)\" 79set ylabel \"Instruction Virtual Address (MB)\" 80 81set output \"${TIMELINE_PNG}\" 82set title \"instruction page accessd timeline\" 83 84plot 'out.txt' using (\$0/$num*10):(\$3/1024/1024) with dots notitle 85" | test gnuplot 86
