[blfs-support] firefox-32.0.1 extremely slow
Fernando de Oliveira
famobr at yahoo.com.br
Mon Nov 17 16:24:21 PST 2014
On 17-11-2014 20:08, Christopher Gregory wrote:
> On Tue, November 18, 2014 11:32 am, Richard wrote:
>> I think I successfully built firefox-32.0.1 in
>> blfs-7.6, but it is terribly slow, to the point of being unusable.
> I have other issues with firefox, namely that if you have more than say 7
> or 8 tabs open it periodically takes 100% of the cpu.
If it is a *i686 system*, there is a problem of lacking of optimization.
you have a newer version (there is another one newer than that, but
changes were not for Linux.
There, you will find new instructions, in order to obtain optimization,
and then a much faster and smaller firefox, which does not stall at 100%
of the CPU.
Essentially, if you update gcc to 4.9.2, all optimization can be used.
Otherwise, some improvement can be obtained with
test $(uname -m) = "i686" && sed -i 's/enable-optimize/&=-O2/' mozconfig
I've told Christopher about that. It has been discussed in the dev list.
I've upgraded gcc to that version in the two machines I use mostly.
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