X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=performance.mdwn;h=e838c8a64f17693cad4d7661081f07c37aa71412;hb=2aa041c1ddc2e62c09cc0f73dc5a0cb5ac90debe;hp=04a36d8e0d78e168d6e1a83b9c811bdafa9b345c;hpb=340850acdb04353360caaa94bed90c7cf2a194d5;p=notmuch-wiki

diff --git a/performance.mdwn b/performance.mdwn
index 04a36d8..e838c8a 100644
--- a/performance.mdwn
+++ b/performance.mdwn
@@ -1,5 +1,7 @@
 # Optimize notmuch's performance
 
+[[!toc levels=2]]
+
 ## Xapian 1.2.x database format: chert vs. flint
 
 Xapian 1.2 (in contrast to 1.0.x) uses a new database format called
@@ -99,3 +101,17 @@ Remove old and renamed compacted, if compacting went well:
 
 * [Pieter Praet](http://notmuchmail.org/pipermail/notmuch/2011/004175.html)
 
+
+## Tagging: use filters!
+
+Instead of just:
+
+    $ notmuch tag +foo
+
+use:
+
+    $ notmuch tag +foo -- not tag:foo
+
+See the ongoing discussion:
+
+* [Optimization for notmuch tag by implicit filters](http://notmuchmail.org/pipermail/notmuch/2011/004197.html)