Doug Kelly wrote: > On Sep 2, 2007, at 10:56 PM, Nenhum_de_Nos wrote: > >> hail, >> >> I have a Turion X2 1.8GHz and created a SMP 64bits VM just for running >> folding at home. I'm now compiling linux kernel source for gentoo >> distro, and it takes a century for each module (.o) to be compiled. >> >> FreeBSD xxx.apartnet 7.0-CURRENT FreeBSD 7.0-CURRENT #0: Thu Aug 9 >> 01:44:04 BRT 2007 root_at_xxx.apartnet:/usr/obj/usr/src/sys/xxx i386 >> >> and >> >> QEMU PC emulator version 0.9.0, Copyright (c) 2003-2007 Fabrice Bellard >> >> any more info, just ask ... >> >> is it always this slow ?! > > Well, I know -CURRENT's kernel has a ton of debug options enabled by > default, which will adversely impact performance. You can disable > them in the kernel's config file (you'll need to rebuild the kernel, > though), and the GENERIC config has some notes about them. Also, qemu > is a full emulator--although there is a kernel module for Linux to > allow some type of virtualization, I'm not sure if it's been ported to > any other OSes. > > In short, yes, it will be slow. I'm sure "a century" is hyperbole, > but yes, even though you are on a rather fast machine, it will be > slow, as every single instruction on your qemu VM is going to be > emulated. The kernel module to speed up execution of the x86 emulation on x86 platforms is available in the emulators/kqemu-kmod port. -- Bruce CranReceived on Mon Sep 03 2007 - 03:24:12 UTC
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