Re: [Valgrind-developers] performances of trunk compared to 3.8.1 ?

[Philippe W. <phi...@sk...>]

On Fri, 2013-09-06 at 15:52 +0200, Julian Seward wrote:

> Also, r13278 has effect for 64 bit targets but not for 32 bit targets
> since 32 bit targets deal with all 4GB "fast" anyway.  So:
> 
> - it can't account for any slowdowns we see on x86-linux
> - it should also give visible slowdowns on other 64 bit targets,
>   not just s390
> 
> We need more numbers :)
Yes.
I looked a little bit more in depth at the x86 slowdown.
This seems to be limited to the old pentium 4.
It looks like there is no slowdozn for a 32 bit bz2 with Valgrind
on a 64 bit OS/modern cpu.
(I already encounteed in the past not understandable variations
of performance on a P4).

Would be nice to have mips or arm (also 32 bits) performances.

Philippe