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From: Tom Wijsman <TomWij@gentoo.org>
To: heroxbd@gentoo.org
Cc: gentoo-dev@lists.gentoo.org
Subject: Re: [gentoo-dev] Portage QOS
Date: Fri, 10 Jan 2014 02:02:18 +0100	[thread overview]
Message-ID: <20140110020218.0f6244d5@TOMWIJ-GENTOO> (raw)
In-Reply-To: <86r48g8zdc.fsf@moguhome00.in.awa.tohoku.ac.jp>

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On Fri, 10 Jan 2014 09:16:47 +0900
heroxbd@gentoo.org wrote:

> Igor <lanthruster@gmail.com> writes:
> 
> > The ebuilds have approximately the same time to install, the failure
> > rate is about the same, emerge is getting slower.
> 
> I am curious about the slowness of emerge.

Try a --backtrack=0 approach, I no longer need to increase it. :)

> How about profile the portage and rewrite the time-crucial part in
> C/C++, or ideally, borrowing the counterpart from paludis? How
> feasible is that?

http://dev.gentoo.org/~tomwij/files/portage-2.2.7-python-2.7-backtrack-0.png
http://dev.gentoo.org/~tomwij/files/portage-2.2.7-python-2.7-backtrack-0-hot.png
http://dev.gentoo.org/~tomwij/files/portage-2.2.7-python-3.3-backtrack-0.png

(hot is the hotshot profiler, it internally checks on the line level
instead; 3.3's profiler is obstructed by module loading, no idea why)

> I guess the dep-tree calculation is the slowest part.

Affirmative.

-- 
With kind regards,

Tom Wijsman (TomWij)
Gentoo Developer

E-mail address  : TomWij@gentoo.org
GPG Public Key  : 6D34E57D
GPG Fingerprint : C165 AF18 AB4C 400B C3D2  ABF0 95B2 1FCD 6D34 E57D

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  parent reply	other threads:[~2014-01-10  1:03 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-09  7:24 [gentoo-dev] Portage QOS LTHR
2014-01-09  8:12 ` Alec Warner
2014-01-09 12:44   ` Igor
2014-01-09 14:12     ` Christopher Schwan
2014-01-09 15:26       ` Igor
2014-01-09 15:55         ` Jeroen Roovers
2014-01-09 16:37           ` Igor
2014-01-10  0:27             ` heroxbd
2014-01-10 12:41               ` Igor
2014-01-10 13:51                 ` Rich Freeman
2014-01-10  0:16         ` heroxbd
2014-01-10  0:31           ` Patrick Lauer
2014-01-10  1:19             ` Tom Wijsman
2014-01-10  1:52               ` Patrick McLean
2014-01-10  2:40                 ` Tom Wijsman
2014-01-10  6:17                 ` Brian Dolbec
2014-01-10 18:14                 ` Ciaran McCreesh
2014-01-10  7:54             ` heroxbd
2014-01-10 18:11             ` Ciaran McCreesh
2014-01-11  3:57               ` Patrick Lauer
2014-01-10  1:02           ` Tom Wijsman [this message]
2014-01-10  9:10             ` heroxbd
2014-01-10 14:54               ` Tom Wijsman
2014-01-10 12:23           ` Igor
2014-01-10 12:30             ` René Neumann
2014-01-10 12:30           ` Igor
2014-01-10 12:39             ` Patrick Lauer
2014-01-10 13:05               ` Igor
2014-01-10 13:18                 ` René Neumann
2014-01-10 18:19                   ` Ciaran McCreesh
2014-01-10 19:06                     ` René Neumann
2014-01-10 14:05                 ` heroxbd
2014-01-12 10:47                 ` [gentoo-dev] " Steven J. Long
2014-01-10 13:10               ` [gentoo-dev] " Igor
2014-01-10 14:02                 ` Rich Freeman
2014-01-10 15:16                   ` Tom Wijsman
2014-01-10 18:12           ` Ciaran McCreesh
2014-01-09 15:49     ` Ben Kohler
2014-01-09 16:11       ` Igor
2014-01-09 17:59     ` [gentoo-dev] " Duncan
2014-01-09 20:42       ` Igor
2014-01-09 21:08         ` Chris Reffett
2014-01-10 12:10           ` Igor
2014-01-10 12:26             ` René Neumann
2014-01-10 12:52               ` Igor
2014-01-10 12:57                 ` René Neumann
2014-01-10 15:39                 ` Tom Wijsman
2014-01-10 16:36             ` Mike Frysinger
2014-01-10 18:17             ` Greg KH
2014-01-10 19:38           ` Duncan
2014-01-10 22:36             ` heroxbd
2014-01-11  1:28               ` Duncan
2014-01-09 19:35 ` [gentoo-dev] " yac
2014-01-11 15:00 ` Naohiro Aota
2014-01-12 10:28   ` Igor
2014-01-12 19:31   ` Igor
2014-01-12 19:31   ` Igor

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