[gentoo-user] about ccache permission adjusting

[gentoo-user] about ccache permission adjusting

[sempsteen]

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Hi,
I've changed my CFLAGS settings and merged ccache for future works. Now i'm
updating my system with "emerge -e world". During merge i realize that
ccache is adjusting permissions before and after for all packages, it's
something like this:

>>> media-libs/libsdl-1.2.8-r1 merged.
* Adjusting permissions on ccache in /root/.ccache

>>> clean: No packages selected for removal.

>>> emerge (105 of 405) media-libs/jpeg-6b-r5 to /
* Adjusting permissions on ccache in /root/.ccache

My question is about this adjusting process, each adjusting process longs
about 4 to 5 seconds. For whole update this makes 54 to 67.5 minutes and if
this really is only an permission adjusting process i thought this is just
loosing time. Can you help to understand this and if there is a settings for
this that i missed would you show me?

-----------------------
My make.conf file
-----------------------

CFLAGS="-march=pentium4 -mcpu=pentium4 -O2 -pipe -fomit-frame-pointer
-momit-leaf-frame-pointer -fno-ident"
CHOST="i686-pc-linux-gnu"
CXXFLAGS="${CFLAGS}"
MAKEOPTS="-j2"
GENTOO_MIRRORS="http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/
http://ftp.uni-erlangen.de/pub/mirrors/gentoo
http://mirrors.sec.informatik.tu-darmstadt.de/gentoo/
http://ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/
http://pandemonium.tiscali.de/pub/gentoo/ http://gentoo.intergenia.de
http://mirror.aiya.ru/pub/gentoo/ http://ftp.citkit.ru/pub/Linux/gentoo
http://ftp.ankara.edu.tr/gentoo/"
SYNC="rsync://rsync.de.gentoo.org/gentoo-portage"
USE="-3dfx -3dnow -3dnowext -afs -aim -qt -kde -ipv6 -nsplugin -doc -debug
-spell -arts oss esd unicode gnome alsa mmx sse sse2 nls X gtk gtk2"
PORT_LOGDIR=/home/portage/logs
CLEAN_DELAY=0
FEATURES="ccache"
CCACHE_SIZE="2G"
CCACHE_DIR="/root/.ccache"

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[gentoo-user] about ccache permission adjusting

[sempsteen]

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Hi,
I've changed my CFLAGS settings and merged ccache for later works. Now i'm
updating my system with "emerge -e world". During merge i realize that
ccache is adjusting permissions for 4 times per package; before merge,
before unmerge of existing packages, after unmerge and after merge. It's
something like this:

--- !targe sym /usr/lib/libglib-2.0.so <http://2.0.so>
* Adjusting permissions on ccache in /root/.ccache
>>> original instance of package unmerged safely.
* Adjusting permissions on ccache in /root/.ccache
>>> Regenerating /etc/ld.so.cache...
>>> dev-libs/glib-2.6.5 merged.
* Adjusting permissions on ccache in /root/.ccache

>>> clean: No packages selected for removal.

>>> emerge (133 of 405) x11-libs/pango-1.8.1-r1 to /
* Adjusting permissions on ccache in /root/.ccache

My question is about this adjusting process, each adjusting process longs
about 5 to 6 seconds. For whole update this makes 135 to 162 minutes and if
this really is only an permission adjusting process i thought this is just
loosing time. Can you help to understand this and if there is a setting for
this that i've missed would you show me?

-----------------------
My make.conf file
-----------------------

CFLAGS="-march=pentium4 -mcpu=pentium4 -O2 -pipe -fomit-frame-pointer
-momit-leaf-frame-pointer -fno-ident"
CHOST="i686-pc-linux-gnu"
CXXFLAGS="${CFLAGS}"
MAKEOPTS="-j2"
GENTOO_MIRRORS="http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/
http://ftp.uni-erlangen.de/pub/mirrors/gentoo
http://mirrors.sec.informatik.tu-darmstadt.de/gentoo/
http://ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/
http://pandemonium.tiscali.de/pub/gentoo/ http://gentoo.intergenia.de
http://mirror.aiya.ru/pub/gentoo/ http://ftp.citkit.ru/pub/Linux/gentoo
http://ftp.ankara.edu.tr/gentoo/"
SYNC="rsync://rsync.de.gentoo.org/gentoo-portage"
USE="-3dfx -3dnow -3dnowext -afs -aim -qt -kde -ipv6 -nsplugin -doc -debug
-spell -arts oss esd unicode gnome alsa mmx sse sse2 nls X gtk gtk2"
PORT_LOGDIR=/home/portage/logs
CLEAN_DELAY=0
FEATURES="ccache"
CCACHE_SIZE="2G"
CCACHE_DIR="/root/.ccache"

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Re: [gentoo-user] about ccache permission adjusting

[Richard Fish]

On 11/19/05, sempsteen <sempsteen@gmail.com> wrote:
> Hi,
>  I've changed my CFLAGS settings and merged ccache for later works. Now i'm
> updating my system with "emerge -e world". During merge i realize that
> ccache is adjusting permissions for 4 times per package; before merge,
> before unmerge of existing packages, after unmerge and after merge. It's
> something like this:
>
>  --- !targe sym /usr/lib/libglib-2.0.so
>  * Adjusting permissions on ccache in /root/.ccache
>  >>> original instance of package unmerged safely.

First, there is no need to post your message multiple times.  Gmail
doesn't show your own postings to mailing lists, so you will not see
your message until someone resonds.  Also, you should only post in
plain text...no HTML/Rich formatting.

The Adjusting permissions is done in /usr/lib/portage/pym/portage.py. 
Basically, it makes sure that the ccache directory is owned by
root:portage, and is group writable.  If you use userpriv, it does the
same thing, but for owner portage:portage.

Actually, there is a problem in the code in that it also looks for the
SETGUID bit, but doesn't set it.  So if you want to avoid this, you
can set the SETGUID bit with:

chmod -R 02770 /root/.ccache

-Richard

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gentoo-user@gentoo.org mailing list

Re: [gentoo-user] about ccache permission adjusting

[sempsteen]

>> First, there is no need to post your message multiple times.
I didn't know that i sent it multiple times?. I've sent one to
"gentoo-user@lists.gentoo.org" by mistake and when i figure out this i
wrote another one to "gentoo-user@gentoo.org". From your message i see
that both are the same way. I'm realy sorry about this.

>> Also, you should only post in plain text...no HTML/Rich formatting.
You're right, sorry again. I'll never do that again.

And thank for your considerations and answer.

On 11/19/05, Richard Fish <bigfish@asmallpond.org> wrote:
> On 11/19/05, sempsteen <sempsteen@gmail.com> wrote:
> > Hi,
> >  I've changed my CFLAGS settings and merged ccache for later works. Now i'm
> > updating my system with "emerge -e world". During merge i realize that
> > ccache is adjusting permissions for 4 times per package; before merge,
> > before unmerge of existing packages, after unmerge and after merge. It's
> > something like this:
> >
> >  --- !targe sym /usr/lib/libglib-2.0.so
> >  * Adjusting permissions on ccache in /root/.ccache
> >  >>> original instance of package unmerged safely.
>
> First, there is no need to post your message multiple times.  Gmail
> doesn't show your own postings to mailing lists, so you will not see
> your message until someone resonds.  Also, you should only post in
> plain text...no HTML/Rich formatting.
>
> The Adjusting permissions is done in /usr/lib/portage/pym/portage.py.
> Basically, it makes sure that the ccache directory is owned by
> root:portage, and is group writable.  If you use userpriv, it does the
> same thing, but for owner portage:portage.
>
> Actually, there is a problem in the code in that it also looks for the
> SETGUID bit, but doesn't set it.  So if you want to avoid this, you
> can set the SETGUID bit with:
>
> chmod -R 02770 /root/.ccache
>
> -Richard
>
> --
> gentoo-user@gentoo.org mailing list
>
>

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gentoo-user@gentoo.org mailing list