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Make bench script output clearer for people reading the output first thing in the morning. ;)

#!/bin/sh
# 
# Does a bonnie throughput run (80M file and 1K chunksize if the
# BONNIE_FILESIZE and/or BONNIE_CHUNKSIZE variables are not set),
# then massages the output into CSV format with the human-readable
# output preceding it as a "comment" (ie. #-prefixed).
# 
BONNIE_FILESIZE=${BONNIE_FILESIZE:=500M}
BONNIE_CHUNKSIZE=${BONNIE_CHUNKSIZE:=1K}

[ -z "$here" ] && here=`pwd`
. $here/common.bonnie

# 
# Sample bonnie throughput output (stderr):
#Version 1.02c       ------Sequential Output------ --Sequential Input- --Random-
#                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
#Machine   Size:chnk K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
#          150M:64k           52024  99 88969  99           245492 100  3746 264
# 
filter_stderr()
{
	sed -e 's/^..................../# /g' | awk '{print} END {print "#"}'
}

# 
# Sample bonnie throughput output (stdout):
# ",150M:64k,,,52024,99,88969,99,,,245492,100,3746.0,264,,,,,,,,,,,,,"
# 
filter_stdout()
{
	perl -ne '
		chomp;
		s/,+/,/g; s/^,//; s/,$//;
		@values = split /,/;
		printf "%9s", shift @values;
		for ($i = 0; $i <= $#values; $i++) {
			if ($i % 2) { printf ",%4s%%", $values[$i] }
			else        { printf ",%10s", $values[$i] }
		}
		printf "\n";
	'
}

if [ $# -gt 0 ]; then
	printf "%9s,%10s,%5s,%10s,%5s,%10s,%5s,%10s,%5s\n" size:chnk \
		writeK/s wCPU rewriteK/s rwCPU readK/s rCPU seek/s sCPU
	exit 0
fi
run_bonnie -n 0 -s $BONNIE_FILESIZE:$BONNIE_CHUNKSIZE