X-Recipient:	archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status:	No, hits=-6.9 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS,T_RP_MATCHES_RCVD
X-Spam-Check-By:	sourceware.org
Message-ID:	<4BE41E73.3010007@redhat.com>
Date:	Fri, 07 May 2010 08:06:43 -0600
From:	Eric Blake <eblake AT redhat DOT com>
User-Agent:	Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.9) Gecko/20100330 Fedora/3.0.4-1.fc12 Lightning/1.0b1 Mnenhy/0.8.2 Thunderbird/3.0.4
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: bash -i with installed and enabled bash_completion starting too slow
References:	<hs0hq8$aqk$1 AT dough DOT gmane DOT org>
In-Reply-To:	<hs0hq8$aqk$1@dough.gmane.org>
X-IsSubscribed:	yes
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

--------------enigBBE8245EC49A0A9E4CA86BE5
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

On 05/07/2010 02:08 AM, Oleksandr Gavenko wrote:
> from sh I run:
>=20
> sh-3.2$ time bash -i -c echo
>=20
> real    0m0.218s
> user    0m0.062s
> sys     0m0.016s
>=20
> sh-3.2$ echo ". /etc/bash_completion" >~/.bashrc   # enable completion
>=20
> sh-3.2$ time bash -i -c echo
>=20
> real    0m2.657s

Yes, this is a known issue with the current bash-completion - it sources
a HUGE file, which conditionally defines lots of shell functions after
probing which commands are present, and if your $PATH includes anything
with high-latency probing (like a networked drive), it adds up fast.
Upstream bash-completion is working on a plugin-style completion, where
the initial framework loads quickly without any program probing, and
then hitting TAB per program loads just that program's completion
routines, but it is still a work in progress.  So it will get better
over time, and get there faster if you help contribute upstream.

--=20
Eric Blake   eblake AT redhat DOT com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org
volunteer cygwin bash-completion maintainer


--------------enigBBE8245EC49A0A9E4CA86BE5
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)
Comment: Public key at http://people.redhat.com/eblake/eblake.gpg
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/

iQEcBAEBCAAGBQJL5B53AAoJEKeha0olJ0NqpgkH/0+GpFlhpldNdWDSflYpXP40
a+oy/Q9Ac3xuVsqs33UqXnzBI1v4vjZreeX9/BarZVbw+EEmR/jk7vkjpqKxPBPS
VXa+PCS/9A0u0x2ojnXirHicKYbwAL3QKvclvE/ujZR7NKXh9hHRy0f501SXW/ld
6OqPxYw+1cV/vR6/CPdBzdCv/SRnPcNKJ3TtZt0H++WikVLb1ZzUjVhmLhmXCdzr
kCiLxKqJDMN5VbdVz355bbkcNhnyYLV9f3Ckdqr3qiVsWYEBDvP50ef1Mlgo1Sty
YOLOMCPdDfMCZ72I9p/8X3H3w/mh7G5z/3/3P4nOZqfua9CmaXCHNtx486XHOLo=
=gqpI
-----END PGP SIGNATURE-----

--------------enigBBE8245EC49A0A9E4CA86BE5--

- Raw text -