Messages in this thread |  | | Date | Sat, 8 Jun 1996 15:40:44 -0400 | From | Robert L Krawitz <> | Subject | Re: Speed of memcpy, csum_partial and csum_partial_copy |
| |
Date: Sat, 8 Jun 1996 20:21:15 +0300 (EET DST) From: Linus Torvalds <torvalds@cs.helsinki.fi>
On Sat, 8 Jun 1996, Alan Cox wrote:
> Several people have sped the checksum/copy code up over time. If you can > speed it further then you will be number 4, and since the performance of > these routines is very critical then the patches will be welcome.
Just to show exactly _how_ important, here's some profiling info of a machine that has been busy doing TCP over loopback (everything >= 0.5% included):
Linus, is there any possibility of putting the FPU memcpy into 2.1 as an experimental feature? I've gotten a lot of good feedback from the pentium-memcpy list (the only person who's been having problems is on an SMP).
-- Robert Krawitz <rlk@tiac.net> http://www.tiac.net/users/rlk/
Member of the League for Programming Freedom -- mail lpf@uunet.uu.net Tall Clubs International -- tci-request@aptinc.com or 1-800-521-2512
|  |