Date: Mon, 19 Sep 2005 20:19:00 +0200 From: dvorak <dvorak@...all.nl> To: john-users@...ts.openwall.com Subject: Re: Suggestions for XEON performance? Hi, > (I am planning to add "linux-x86-sse-elf" which would be the right > choice for P4s. With that, they would become only a little bit slower > than P3s per-MHz. Stay tuned.) Is there a place where such future features are listed, since i started to look into this as well since i didn't find a reference, but maybe i should just ask the list. > C compiler flags are largely irrelevant when most of the performance > critical code is written in assembly right away. > > > Also should I use gcc 3.4 or 4.0? > > It shouldn't matter. For the assembly stuff that is, on a P4 i noticed that gcc 3.4 uses very slow memset implementations (rep stosd iirc). But i guess most (if not all) performance critical loops are in assembly anyways. gtx. dvorak
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