From owner-freebsd-hackers@FreeBSD.ORG  Mon Feb 20 15:48:06 2012
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Date: Mon, 20 Feb 2012 16:21:16 +0100
Message-ID: <CABzXLYN9HnbRan8GTbvOnokcvrufBOhYKXpf02wSgXJWS=Q_Xg@mail.gmail.com>
From: Olivier Smedts <olivier@gid0.org>
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Cc: rank1seeker@gmail.com, sendtomatt@gmail.com, dougb@freebsd.org,
	=?ISO-8859-2?Q?Edward_Tomasz_Napiera=B3a?= <trasz@freebsd.org>,
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Subject: Re: 8 to 9: Kernel modularization -- did it change?
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2012/2/18  <perryh@pluto.rain.com>:
> Doug Barton <dougb@freebsd.org> wrote:
>
>> loading modules through loader.conf is
>> veeeeeerrrrryyyyyy sssssllllloooooowwwwww ...
>
> Is it noticeably slower to load (say) a 6MB kernel + 2MB of
> modules than to load an 8MB kernel? =A0If so, any idea why?

It has been *really* slower to load many files (modules) since I
switched to ZFS on root. I had to build a monolithic kernel to save
10-15s of loading time.

Now I use trasz@'s (CC'ed) patch to speed up the loader, and it seems
maybe as fast as with UFS. I don't know if the patch speeds up things
with UFS, but with ZFS it made a big difference.

--=20
Olivier Smedts=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=A0 _
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 ASCII ribbon campaign ( )
e-mail: olivier@gid0.org=A0 =A0 =A0 =A0 - against HTML email & vCards=A0 X
www: http://www.gid0.org=A0 =A0 - against proprietary attachments / \

=A0 "Il y a seulement 10 sortes de gens dans le monde :
=A0 ceux qui comprennent le binaire,
=A0 et ceux qui ne le comprennent pas."