#!/bin/sh # # The contents of this file are subject to the Mozilla Public # License Version 1.1 (the "License"); you may not use this file # except in compliance with the License. You may obtain a copy of # the License at http://www.mozilla.org/MPL/ # # Software distributed under the License is distributed on an "AS # IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr # implied. See the License for the specific language governing # rights and limitations under the License. # # The Original Code is historgram-diff.sh, released Dec 8, 2000. # # The Initial Developer of the Original Code is Netscape # Communications Corporation. Portions created by Netscape are # Copyright (C) 2000 Netscape Communications Corporation. All # Rights Reserved. # # Contributor(s): # Chris Waterson # # This shell script takes two `object histograms' produced using # `histogram.pl' and prints the delta, sorted such that the objects # that increased the most in raw memory usage are displayed at the # top. # # Usage: # # histogram-diff.sh [-c ] # # Compute incremental memory growth from histogram in file to # histogram in file , displaying at most rows. # How many rows are we gonna show? COUNT=20 # Read arguments while [ $# -gt 0 ]; do case "$1" in -c) COUNT=$2 shift 2 ;; *) break ;; esac done BASE=$1 INCR=$2 # Sort the base and incremental files so that we can `join' them on # the type name sort $BASE > /tmp/$$.left sort $INCR > /tmp/$$.right # Do the join. The first `awk' script computes the difference between # the base and the incremental files. The second `awk' script computes # a `TOTAL' row. Then, we sort by the larges delta in bytes. join /tmp/$$.left /tmp/$$.right |\ awk '{ print $1, $2, $3, $4, $5, $4 - $2, $5 - $3; }' |\ awk '{ tobj1 += $2; tbytes1 += $3; tobj2 += $4; tbytes2 += $5; tdobj += $6; tdbytes += $7; print $0; } END { print "TOTAL", tobj1, tbytes1, tobj2, tbytes2, tdobj, tdbytes; }' |\ sort -nr +6 > /tmp/$$.sorted rm -f /tmp/$$.left /tmp/$$.right # Pretty-print, including percentages cat < /tmp/$$.awk BEGIN { print " ---- Base ---- ---- Incr ---- ----- Difference ----"; print "Type Count Bytes Count Bytes Count Bytes %Total"; } \$1 == "TOTAL" { tbytes = \$7; } NR <= $COUNT { printf "%-22s %6d %8d %6d %8d %6d %8d %6.2lf\n", \$1, \$2, \$3, \$4, \$5, \$6, \$7, 100.0 * \$7 / tbytes; } NR > $COUNT { oobjs1 += \$2; obytes1 += \$3; oobjs2 += \$4; obytes2 += \$5; odobjs += \$6; odbytes += \$7; } END { printf "%-22s %6d %8d %6d %8d %6d %8d %6.2lf\n", "OTHER", oobjs1, obytes1, oobjs2, obytes2, odobjs, odbytes, odbytes * 100.0 / tbytes; } EOF # Now pretty print the file, and spit it out on stdout. awk -f /tmp/$$.awk /tmp/$$.sorted rm -f /tmp/$$.awk