Re: Syscall/Sysret state on i386 arch

From: Alexander Best (arundel_at_h3c.de)
Date: 08/29/05

  • Next message: Brooks Davis: "Re: Feature requests / inquiries." 
    Date: Mon, 29 Aug 2005 20:44:08 +0200
To: freebsd-hackers@freebsd.org

    On Mon Aug 29 05, Scott Long wrote:
    >
    > Actually, the results were fairly inconclusive because it was also
    > somewhat unstable under real loads.
    >
    > The work is in Perforce under
    >
    > //depot/user/jeff/sysenter/...
    >
    > I've worked on this branch also, but not in a few months. I can
    > make patches if anyone is interested.
    >
    > Scott

    That would be awsome. I'd defenately check it out, because I'm really
    interested to see how syscall/sysret compares to the current way of doing
    syscalls.

    Maybe somebody can comment on the speed increase that was gained by replacing
    int80h in the AMD64 branch. I just had a look at lib/libc/amd64/SYS.h and it
    seems they decided to use syscall/sysret instead of int80h about 2 years ago:

    > Revision 1.25 (Wed Apr 30 18:06:14 2003 UTC (2 years, 4 months ago) by peter)

    Cheers
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  • Next message: Brooks Davis: "Re: Feature requests / inquiries."