X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=performance.mdwn;h=a6d7f2e84c465e6b384652c4a2aaa6e2b8655af6;hb=dbbbcf531e21ec9743e7d25f6fe12147b3b7b7c7;hp=4adb946bf77086aa263b560b3b023829af76823c;hpb=02404d2354e769c1666cc83dae7909f9efea9e85;p=notmuch-wiki

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+[[!img notmuch-logo.png alt="Notmuch logo" class="left"]]
 # Optimize notmuch's performance
 
 [[!toc levels=2]]
 
+## Use of ecryptfs slows notmuch down.
+
+I noticed that my `notmuch new` was really slow (several minutes) for
+less then 20 new emails (around 20K in my database).
+
+The performance tests in the notmuch source didn't show any real
+issue, even on a non-encrypted ext4 fs.
+
+After investigation and running different tests, a switch to a
+LUKS-btrfs based filesystem to replace the ext4-ecryptfs resolved the
+issue. It now takes some seconds to index hundreds of messages.
+
 ## Xapian 1.2.x database format: chert vs. flint
 
 Xapian 1.2 (in contrast to 1.0.x) uses a new database format called