Messages in this thread | | | Subject | Re: 2.4, 2.6, i686/athlon and LDT's | From | Arjan van de Ven <> | Date | Mon, 27 Dec 2004 21:22:16 +0100 |
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On Mon, 2004-12-27 at 11:46 -0800, Tymm Twillman wrote: > Hi all,
> > It appears that use of the LDT is to speed up context switching between > threads, although I haven't even found especially good references WRT > that. I have looked through the info in the IA Developers publications > and have whacked my head against Google quite a bit. However, every bit > of clarity I've found there has been offset by new confuzled bits.
LDT's are *slow*. That's why glibc will try to avoid using them nowadays, and with 2.6 it won't; as for 2.4.. it depends if you use a vendor 2.4 it might be able to avoid using LDT's as well.
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