Subject: Re: AMD64 users: please update libc!
To: Matthias Drochner <>
From: Hubert Feyrer <>
List: current-users
Date: 03/11/2004 22:25:57
On Thu, 11 Mar 2004, Matthias Drochner wrote:
> I've recently removed the last use of the old (int 0x80) syscall
> entry from amd64's libc. (which was in getcontext())

Can you post some numbers for comparison, and for curiosity, before and

FWIW, on i386, I get the following numbers from bytebench (grep 'System
Call Overhead'):

1.4.1:		 57000 lps
1.5_ALPHA2:	 50161 lps
1.6ZG:		314239 lps

I assume that big is better here (loops per second?).

  - Hubert

Hubert Feyrer <>