"xargs tar cf backup.tar < $manifest" recreates the tar file with each
"batch" execed by xargs. In general this results in only a fraction of
the desired files being backed up.
. $(dirname "$0")/perf-test-lib.sh || exit 1
uncache_database
. $(dirname "$0")/perf-test-lib.sh || exit 1
uncache_database
+manifest=$(mktemp manifestXXXXXX)
+find mail -type f ! -path 'mail/.notmuch/*' | sed -n '1~4 p' > $manifest
+xargs tar uf backup.tar < $manifest
+
for i in $(seq 2 6); do
time_run "notmuch new #$i" 'notmuch new'
done
for i in $(seq 2 6); do
time_run "notmuch new #$i" 'notmuch new'
done
-manifest=$(mktemp manifestXXXXXX)
-
-find mail -type f ! -path 'mail/.notmuch/*' | sed -n '1~4 p' > $manifest
# arithmetic context is to eat extra whitespace on e.g. some BSDs
count=$((`wc -l < $manifest`))
# arithmetic context is to eat extra whitespace on e.g. some BSDs
count=$((`wc -l < $manifest`))
time_run "new ($count mv back)" 'notmuch new'
time_run "new ($count mv back)" 'notmuch new'
-xargs tar cf backup.tar < $manifest
-
perl -nle 'unlink $_; unlink $_.copy' $manifest
time_run "new ($count rm)" 'notmuch new'
perl -nle 'unlink $_; unlink $_.copy' $manifest
time_run "new ($count rm)" 'notmuch new'