Re: Intel P6 vs P7 system call performance

From: Ulrich Drepper (drepper@redhat.com)
Date: Sun Dec 22 2002 - 14:17:45 EST


Linus Torvalds wrote:

>>I presume *%gs:0x18 is only for shared objects?
>
>
> No, it's for everything, but it requires a glibc that has set it up.

Actually, the above is used only in the DSOs. In static objects I'm
using a global variable. This saves the %gs prefix.

But of course Linus is right: using the new functionality needs quite a
bit of infrastructure which most definitely isn't present in the libc
you have on your system. See my post from a few minutes ago.

-- 
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Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
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