18 messages in org.freebsd.freebsd-currentRe: Pentium optimizations| From | Sent On | Attachments |
|---|---|---|
| Alex | Dec 16, 1997 6:59 pm | |
| Tim Liddelow | Dec 16, 1997 8:05 pm | |
| John S. Dyson | Dec 16, 1997 8:37 pm | |
| Alex | Dec 16, 1997 9:17 pm | |
| Tim Liddelow | Dec 16, 1997 9:36 pm | |
| Scott Michel | Dec 16, 1997 10:02 pm | |
| John S. Dyson | Dec 16, 1997 10:23 pm | |
| Brian Handy | Dec 16, 1997 10:47 pm | |
| John S. Dyson | Dec 16, 1997 11:04 pm | |
| Warner Losh | Dec 16, 1997 11:49 pm | |
| John S. Dyson | Dec 17, 1997 12:04 am | |
| Poul-Henning Kamp | Dec 17, 1997 2:55 am | |
| Warner Losh | Dec 17, 1997 7:09 am | |
| Russell L. Carter | Dec 17, 1997 7:42 am | |
| Eivind Eklund | Dec 17, 1997 10:13 am | |
| Tim Liddelow | Dec 17, 1997 2:26 pm | |
| Doug Rabson | Dec 18, 1997 12:35 pm | |
| John Polstra | Dec 21, 1997 1:35 pm |
| Subject: | Re: Pentium optimizations | |
|---|---|---|
| From: | John S. Dyson (dys...@freebsd.org) | |
| Date: | Dec 16, 1997 10:23:01 pm | |
| List: | org.freebsd.freebsd-current | |
Alex said:
The response(s) I got to my "I'm a newbie, anyone know about this problem" was basically met with "well no FreeBSD developers have contacted us, and if they did we'd accept/commit/whatever some changes..".
I expected that they would be cooperative (the EGCS group appears to be culturally similar to us (modulo-GPL).) John Polstra is really our most active ELF/Compiler person, and so he would likely be a better "official FreeBSD" interface. He is also less politically likely to insert his foot into his eating orifice. I do have some PPro mods, and they appear to help performance on average. The PPro is a really wierd creature (like the K6.) The darned processor does so much optimization, it appears to be insensitive to code mods. There are areas of reasonable payoffs, and lots of "obvious" optimizations that end up being neutral.