| 1 |
-----BEGIN PGP SIGNED MESSAGE----- |
| 2 |
Hash: SHA1 |
| 3 |
|
| 4 |
Mike Spitzer wrote: |
| 5 |
> On Fri, Jun 08, 2007 at 11:26:54AM +0200, Florian Philipp wrote: |
| 6 |
>> In other words, there is no clear answer but my chances are quiet bad. |
| 7 |
>> |
| 8 |
>> I think I'll try around a bit. I'll prepare three images on my desktop, one |
| 9 |
>> Os, one O2 and one O3. |
| 10 |
>> |
| 11 |
>> Then I'll post my experience... |
| 12 |
> |
| 13 |
> Just from personal experience: I once compiled everything using O3 and |
| 14 |
> couldn't tell any appreciable difference in speed on most applications. |
| 15 |
> It also seemed to cause some applications to behave oddly or crash at |
| 16 |
> weird times. Booting off of a boot cd and recompiling the whole system |
| 17 |
> with O2 fixed all of the problems. |
| 18 |
> |
| 19 |
> That was with a PIII, though. I understand many apps now that have |
| 20 |
> trouble with O3 are force to O2 with their ebuild, so your experience |
| 21 |
> may end up being a lot different. It hasn't been worth it for me to try |
| 22 |
> it again. |
| 23 |
|
| 24 |
I don't think it's just P3; I've heard of -O3 causing instability, |
| 25 |
crashes, or whatnot on other archs too. The best thing is probably to |
| 26 |
use -O2 in general, and use higher optimizations for specific |
| 27 |
applications that you want to tune. |
| 28 |
|
| 29 |
- --Ravi |
| 30 |
-----BEGIN PGP SIGNATURE----- |
| 31 |
Version: GnuPG v2.0.4 (GNU/Linux) |
| 32 |
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org |
| 33 |
|
| 34 |
iD8DBQFGaYAgsDgfoknqAqMRAi6cAJ9GeQB9b/teXJfLryaphs7oMcD86gCg2CPF |
| 35 |
DDuJ8i09alnSxao84lLwcik= |
| 36 |
=vYOn |
| 37 |
-----END PGP SIGNATURE----- |
| 38 |
-- |
| 39 |
gentoo-performance@g.o mailing list |
Archives