Linking speed with large amount of debugging info (IO speed)

[Andrew_Pinski@PlayStation.Sony.Com]

Jakub Jelinek <jakub@redhat.com> wrote on 06/12/2007 02:06:24 AM:

> On Mon, Jun 11, 2007 at 02:35:47PM -0700, 
Andrew_Pinski@PlayStation.Sony.Com wrote:
> > The difference between linking with debugging and without is 3 minutes 
vs 
> > 30 seconds which seems a bit high.
> 
> See http://sources.redhat.com/bugzilla/show_bug.cgi?id=3111
> - the most likely culprit.

I tried the top of the trunk as of yeasterday and I still have a huge 
speed issue.

Here is the timings I got:

apinski@debian:~/hs$ 
~/src/gcc-sony-4.1/sony41clean1/test/install/cell/host-linux/ppu/bin/ppu-lv2-ld 
--version
GNU ld (GNU Binutils) 2.17.50.20070612
Copyright 2007 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License.  This program has absolutely no warranty.
apinski@debian:~/hs$ time 
~/src/gcc-sony-4.1/sony41clean1/test/install/cell/host-linux/ppu/bin/ppu-lv2-gcc 
@link.rsp

real    2m26.355s
user    0m24.734s
sys     0m6.184s

Notice how the time is not spent in user (or system) time but only in real 
time.
I have nothing else running on this machine except some terminals and the 
load average is 0.0.


2.17's result was:
real    2m43.739s
user    0m28.542s
sys     0m6.088s

So it is faster than 2.17 but still slow.

Thanks,
Andrew Pinski