> Are you sure it does? LGDT with non zero argument shouldn't be that costly.
> The %fs switching adds some locked cycles for reloading the segment cache,
> but because Windows uses that I would it expect to be reasonably optimized
> on CPUs.
Its measurable, even on an Athlon.
> I actually tried to complain because on x86-64 it is more costly, but to
> no avail.
The more I see from glibc the more I realise that Linus is right - it needs
replacing
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This archive was generated by hypermail 2b29 : Thu Feb 07 2002 - 21:00:49 EST