From: Kim Minh Kaplan <kimminh.kaplan+nomuch@afnic.fr>
To: notmuch@notmuchmail.org
Cc: Don Zickus <dzickus@redhat.com>
Subject: Re: performance problems with notmuch new
Date: Mon, 20 Apr 2020 15:04:30 +0000 [thread overview]
Message-ID: <875zdukxkx.fsf@kakou.tech.prive.nic.fr> (raw)
In-Reply-To: <1587211167-ner-6.432@LappyL520>
Franz Fellner writes:
> I also suffer from bad performance of notmuch new.
> I used notmuch some years ago and notmuch new always felt instantanious.
> Had to stop using it because internet was too slow to sync my mails :/
> Now (with better internet and a completely new setup using mbsync) indexing one mail takes at least 10 seconds, sometimes even more.
> It can go into minutes when I get lots of mail (~30...).
> When I run it after a reboot I can have breakfast while notmuch starts up...
> This is all on spinning rust. I thought of getting an SSD but not in the near future.
>
> What I observe during that time: notmuch doesn't really need much CPU.
> iotop shows constant read and write with extremely low rates, under 1MB/sec.
> So I think it might be an issue in xapian?
Hello,
I had a similar performance issue working with a very large email set
(in the million count). Amongst those, I have crons that run about every
minute and email back a report, mostly identical every time with some
thousands words.
Apparently indexing many times mostly identical emails triggers a
pathological behaviour. Moving these email out of my mail directories
brought back acceptable performances. We are speaking in the 10,000 to
100,000 files here.
Kim Minh.
> If there is anything I can do to help debug this please tell me
>
> Franz
>
> P.S.:
> @David: Sorry for writing only to you.
> GMail web interface only added you as recipient and not the list...
prev parent reply other threads:[~2020-04-20 15:04 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-15 15:08 performance problems with notmuch new Don Zickus
2020-04-15 16:01 ` David Bremner
2020-04-15 17:31 ` Don Zickus
2020-04-15 20:29 ` David Bremner
2020-04-20 15:25 ` Don Zickus
2020-04-24 10:36 ` David Bremner
2020-04-24 19:05 ` Don Zickus
2020-04-24 23:07 ` David Bremner
2020-04-27 12:48 ` Don Zickus
2020-04-27 12:56 ` David Bremner
2020-04-20 14:31 ` David Bremner
2020-04-20 16:26 ` Don Zickus
2020-04-18 11:59 ` Franz Fellner
2020-04-20 14:36 ` David Bremner
2020-04-22 10:46 ` Franz Fellner
2020-04-22 23:21 ` Olly Betts
2020-04-24 18:35 ` Franz Fellner
2020-04-24 23:13 ` David Bremner
2020-04-29 9:30 ` Eric Wong
2020-04-20 15:04 ` Kim Minh Kaplan [this message]
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