Hi Mike, Reviving an old thread... Le Thursday 16 May 2013 à 09:11 +0200, Jean Delvare a écrit :
Le Wednesday 15 May 2013 à 06:41 +0200, Mike Galbraith a écrit :
On Tue, 2013-05-14 at 15:18 +0200, Jean Delvare wrote:
I took a closer look at the code and it seems that i386 may suffer from a greater performance hit than x86_64. This is because enabling CONFIG_CC_STACKPROTECTOR on i386 disables X86_32_LAZY_GS. I am not familiar with the details but I seem to understand it's about a performance optimization of how context switches are handled. I have no idea how significant it is in practice.
Would you be able to do the performance test again but on a 32-bit x86 host?
Sure. Can it wait a bit? (want to get rt merges/test done first)
No problem, we have some time left before openSUSE 13.1 is released.
13.1 is out by now ;-) Out of curiosity, did you ever find the time to perform the benchmark on 32-bit x86? Thanks, -- Jean Delvare Suse L3 Support -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kernel+owner@opensuse.org