On Maw, 2006-01-10 at 09:56 -0700, Jeff V. Merkey wrote:
> RH ES uses 4:4 which is ideal and superior to this hack.
Its a non trivial trade-off. 4/4 lets you run very large physical memory
systems much more efficiently than usual but you pay a cost on syscalls
and some other events when using the majority of processors. The 4/4
tricks also give most emulations (eg Qemu) serious heartburn trying to
emulate %cr3 reloading via mmap and other interfaces with high overhead
in relative terms.
Of course AMD64 kind of shot the problem in the head once and for all.
Alan
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
