Re: Cygwin speed difference on multiple cores -vs- single-core?

2010-08-14 Thread mike marchywka
On 8/13/10, Andy Nicholas wrote: The scripts we're using form the basis of a build system to invoke GCC and an assembler lots of times throughout a directory tree of a few thousand items. You can end up spending all your time chasing include paths that isn't hard to do. to use

Cygwin speed difference on multiple cores -vs- single-core?

2010-08-13 Thread Andy Nicholas
Hi Folks, When using cygwin, I've noticed that there seems to be a large speed difference when I boot my windows 7 (32-bit) machine in single-core mode versus the regular number of cores (4, Core i7-930). I've read through the FAQ and didn't notice anything about this issue. Normally, I would

Re: Cygwin speed difference on multiple cores -vs- single-core?

2010-08-13 Thread Tim Prince
On 8/13/2010 5:37 PM, Andy Nicholas wrote: Hi Folks, When using cygwin, I've noticed that there seems to be a large speed difference when I boot my windows 7 (32-bit) machine in single-core mode versus the regular number of cores (4, Core i7-930). I've read through the FAQ and didn't notice

Re: Cygwin speed difference on multiple cores -vs- single-core?

2010-08-13 Thread mike marchywka
On 8/13/10, Andy Nicholas wrote: Hi Folks, When using cygwin, I've noticed that there seems to be a large speed difference when I boot my windows 7 (32-bit) machine in single-core mode versus the regular number of cores (4, Core i7-930). I've read through the FAQ and didn't notice anything

Re: Cygwin speed difference on multiple cores -vs- single-core?

2010-08-13 Thread Andy Nicholas
Tim Prince n8tm at aol.com writes: Several possibilities which you haven't addressed may affect this. Are you comparing the performance of a single thread when locked to a single core, compared to when it is permitted to rotate among cores, with or without HyperThread enabled? I've never