Today someone asked me the (reasonable) question of how much
performance impact there is from synching tags to maildir flags. It
turns out it is noticeable, about a 50% overhead compared to
non-synched tags (according to these tests). In practice I don't know
if it's a big problem for users, since I don't know what fraction of
tagging operations involve "special" tags.
time_run 'tag * -existing_tag' "notmuch tag -new_tag '*'"
time_run 'tag * -missing_tag' "notmuch tag -new_tag '*'"
time_run 'tag * -existing_tag' "notmuch tag -new_tag '*'"
time_run 'tag * -missing_tag' "notmuch tag -new_tag '*'"
+time_run 'tag * +maildir_flag F' "notmuch tag +flagged '*'"
+time_run 'tag * -maildir_flag F' "notmuch tag -flagged '*'"
+time_run 'tag * +maildir_flag P' "notmuch tag +passed '*'"
+time_run 'tag * -maildir_flag P' "notmuch tag -passed '*'"
+time_run 'tag * +maildir_flag D' "notmuch tag +draft '*'"
+time_run 'tag * -maildir_flag D' "notmuch tag -draft '*'"
+time_run 'tag * +maildir_flag S' "notmuch tag -unread '*'"
+time_run 'tag * -maildir_flag S' "notmuch tag +unread '*'"
+