Re: Testing 7.0 Beta: FFS still very slow when creating files

["J. Hannken-Illjes" <hannken%eis.cs.tu-bs.de@localhost>]

On 24 Aug 2014, at 18:57, J. Hannken-Illjes <hannken%eis.cs.tu-bs.de@localhost> 
wrote:

<snip>

> I tried to bisect and got an increase in time from ~15 secs to ~24 secs
> between the time stamps '2012-09-18 06:00 UTC' '2012-09-18 09:00 UTC'.
> 
> Someone should redo this test as this interval is the import of the
> compiler (GCC 4.5.3 -> 4.5.4) and I had to rebuild tools.  I cant
> believe this to be a compiler problem.

GCC 4.5.4 disabled builtin memcmp as x86 has no cmpmemsi pattern.

See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43052, Comment 16.

Could this be the cause of this big loss in performance?

--
J. Hannken-Illjes - hannken%eis.cs.tu-bs.de@localhost - TU Braunschweig 
(Germany)