There is a question in the tickets about statistics. This is how I do
it. I have a script for each package that measures time and size.
I build packages in /tmp, but really could be anywhere.
First measure the free disk space:
before=`df -k /tmp | grep / | sed -e "s/ \{2,\}/ /g" | cut -d' ' -f3`
Run the build:
TIMEFMT='%1R Elapsed Time - '
{ time \
{
echo Making $TITLE
date
# Instructions go here
}
} 2>&1 | tee -a $LOG
Get the statistics:
stats $LOG $DIR/$PROGRAM.tar.?z* $before
Where stats does:
function stats()
{
log=$1
tarball=$2
b4=$3
# This changes slightly for a base LFS build
base_sbu=118
free_now=`df -k /tmp | grep / | sed -e "s/ \{2,\}/ /g" |
cut -d" " -f3`
buildtime=`tail -n1 $log|cut -f1 -d" "`
sbu=`echo "scale=3; $buildtime / $base_sbu" | bc`
psizeK=`du -k $tarball | cut -f1`
psizeM=`echo "scale=3; $psizeK / 1024" | bc`
bsizeK=`echo "$free_now - $b4" | bc`
bsizeM=`echo "scale=3; $bsizeK / 1024" | bc`
echo "SBU=$sbu" | tee -a $log
echo "$psizeK $tarball size ($psizeM MB)" | tee -a $log
echo "$bsizeK kilobytes build size ($bsizeM MB)" | tee -a $log
(echo -n "md5sum : "; md5sum $tarball) | tee -a $log
(echo -n "sha1sum: "; sha1sum $tarball) | tee -a $log
echo "`date` $tarball" >> /usr/src/packages-$(lsb_release -r|
cut -f2).log
}
So build size is measured as df_after - df_before. The issue to note
is that there is activity during the build that adds or deletes space on
/tmp, the size will be off. I have /tmp on its own partition.
-- Bruce
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