From: Oliver Charles <oliver.g.charles@googlemail.com>
To: Olly Betts <olly@survex.com>
Cc: notmuch@notmuchmail.org
Subject: Re: Notmuch performance problems on OSX
Date: Tue, 9 Feb 2010 22:16:29 +0000 [thread overview]
Message-ID: <5641883d1002091416m4b1f0210odf71c7a3054299@mail.gmail.com> (raw)
In-Reply-To: <slrnhn3n8t.3ls.olly@msgid.survex.com>
On Tue, Feb 9, 2010 at 10:09 PM, Olly Betts <olly@survex.com> wrote:
> On 2010-02-09, Oliver Charles wrote:
>> I just upgraded to xapian-core HEAD and notmuch master tip today, in
>> desparation to get away from GMail. Sadly it's still taking at least
>> 0.7s to tag a single thread (with one message). I'm really eager to
>> solve this, could anyone give me any pointers on how I could go about
>> profiling it or finding the cause of this problem?
>
> The first thing to try is disabling use of F_FULLFSYNC. You'll need to
> run this command in the xapian-core source tree to comment out the F_FULLFSYNC
> code:
>
> perl -pi -e 's/^#ifdef F_FULLFSYNC/#if 0/' backends/*/*_io.h
>
> Then run "make" and "make install".
$ time notmuch tag +inbox thread:6e66368b7887184c6d4c63653211b3f2
real 0m0.067s
user 0m0.036s
sys 0m0.028s
Now this looks a little bit more usable!
> Assuming that helps, then (a) you have a workaround, and (b) we'll know for
> sure it is F_FULLFSYNC to blame.
Looks like this is the case.
> I've created a ticket for a change to Xapian which should help here, but
> not had a chance to work on it yet:
>
> http://trac.xapian.org/ticket/426
I will add my info there and follow the ticket if I can.
--
Oliver Charles / aCiD2
(Olly, sorry about the double email - in all my excitement I didn't
hit reply all :))
next prev parent reply other threads:[~2010-02-09 22:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-14 15:30 Notmuch performance problems on OSX Oliver Charles
2010-01-14 23:16 ` Carl Worth
2010-01-18 18:35 ` Oliver Charles
2010-02-09 20:46 ` Oliver Charles
2010-02-09 22:09 ` Olly Betts
2010-02-09 22:16 ` Oliver Charles [this message]
2010-01-15 3:58 ` Olly Betts
2010-02-16 3:53 ` Stewart Smith
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