From: David Bremner <david@tethera.net>
Date: Mon, 1 Apr 2019 10:31:51 +0000 (-0300)
Subject: performance-tests: tests for renamed/copied files in notmuch new
X-Git-Tag: archive/debian/0.29_rc0-1~108
X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=commitdiff_plain;h=a56aa472d176d08ba6d175762f673efc345116fa;hp=8e584392dce53d322b9403306991944c5578b1f0

performance-tests: tests for renamed/copied files in notmuch new

Several people have observed that this is surprisingly slow, and we
have a proposal to add tagging into this code path, so we want to make
sure it doesn't imply too much of a performance hit.
---

diff --git a/performance-test/T00-new.sh b/performance-test/T00-new.sh
index 68750129..25391136 100755
--- a/performance-test/T00-new.sh
+++ b/performance-test/T00-new.sh
@@ -12,4 +12,22 @@ 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`))
+
+perl -nle 'rename $_, "$_.renamed"' $manifest
+
+time_run "new ($count mv)" 'notmuch new'
+
+perl -nle 'rename "$_.renamed", $_' $manifest
+
+time_run "new ($count mv back)" 'notmuch new'
+
+perl -nle 'link $_, "$_.copy"' $manifest
+
+time_run "new ($count cp)" 'notmuch new'
+
 time_done