Re: [gentoo-user] why firefox is so slow?

[Farhan Ahmed]

Hemmann, Volker Armin wrote:
> On Friday 05 May 2006 12:42, Farhan Ahmed wrote:
> > Hemmann, Volker Armin wrote:
> > > On Tuesday 02 May 2006 08:18, Farhan Ahmed wrote:
> > > > 	CXXFLAGS="${CFLAGS} -fvisibility-inlines-hidden"
> > >
> > > no, just no. This breaks enough stuff. Do not tell others to use it. If
> > > you want to use it. Fine. But do not tell anybody else to do it.
> >
> > According to http://gentoo-wiki.com/CFLAGS_matrix
> > -fvisibility-inlines-hidden is recommended especially for KDE users..
> > Atleast while KDE it does not effect and is indeed recommended..
>
> and if I remember right, there was some KDE breakage with this flag. No?
>
> gentoo-wiki is not an official gentoo project ;)
> And a wiki can be edited by everybody.
>
>
> http://bugs.gentoo.org/buglist.cgi?bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_status=RESOLVED&bug_status=VERIFIED&bug_status=CLOSED&field0-0-0=product&type0-0-0=substring&value0-0-0=fvisibility-inlines-hidden&field0-0-1=component&type0-0-1=substring&value0-0-1=fvisibility-inlines-hidden&field0-0-2=short_desc&type0-0-2=substring&value0-0-2=fvisibility-inlines-hidden&field0-0-3=status_whiteboard&type0-0-3=substring&value0-0-3=fvisibility-inlines-hidden

Thanks for the pointer.. I take my word back about
-fvisibility-inlines-hidden being a safe option for KDE.

>
> >
> > > > > MAKEOPTS=""
> > > >
> > > > 	MAKEOPTS="-j2"
> > >
> > > -j1 is a good one for singlecore/single cpu computer, where the compiling
> > > is running in the background.
> >
> > No for singlecore/single cpu computer, -j2 is recommended.. Read
> > MAKEOPTS section in:
>
> really? with -j2 my box crawls when compiling, sometimes even oom. With -j1 I
> can use it, as if nothing happens and I don't get oom. Plus - it is not
> slower.
> I have read the sections, I suffered from -j2 and I stopped using it. All
> better now.
> Btw, since switching between tasks and threads is something CPUs really hate,
> I can't even imagine how increasing the amount of needed switches should
> help.
>

Al least Gentoo Handbook is a official Gentoo project and they recommend
it.. :)

> > > > Also if you wish add these lines to /etc/make.conf
> > > >
> > > > 	LDFLAGS="-Wl,-O1,-z,now,--sort-common"
> > >
> > > are you totally sure, that this do not break something? do this flags
> > > bring anything, that can not be archived with prelink?
> > >
> > > Again, you might want to use them, but you should not tell somebody else
> > > to use them.-
> >
> > Honestly I think I was wrong in recommending this.. But during the
> > emerge process of some packages there's a suggestion to use at least a
> > part of the LDFLAGS quoted above.. It's like a security warning.. I
> > decided to use these flags after reading a lot about them in Gentoo
> > forms
>
> yes, but everything in the forums should be taken with a grain of salt - a lot
> of ricers are there. It is safer to look into bugs.gentoo.org ;)

It's true but after doing a bit of research I think they are stable
enough to use.. I don't use all the fancy stuff they post in forums..

> (snip)

Farhan Ahmed
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