On Wed August 3 2005 08:15 am, Mike S wrote: > <snipped from another thread> > > On Mon August 1 2005 07:26 am, Mike S wrote: > >> > Is kernel preemption a bad thing? > >> > > >> > --Mike S > > > > > > No, just broken. > > > > Unless you enable SMP in conjunction with it (yes, even if you _only have > > one CPU_!). > > I opted to use an upstream kernel. Is this also broken here, or just in > the gentoo kernel? And I do have SMP enabled. Basically whatever > speed-ups I can get I am trying to use. > > --Mike S
As I understand, it preemption is not exactly a speedup. It is supposed to improve the responsiveness of the kernel to user input. The kernel can switch contexts in more places inside the kernel in response to other inputs. This is great for desktops, but probably not for servers/number crunchers. I have no idea if it's fixed or not. Try disabling SMP and enabling preemption followed by an emerge of something large (openoffice, kde, you pick). If it succeeds, maybe it's fixed. If not, then it's still broken. Erik P.S. I'm no expert on the kernel (I'm a laser physicist.), so you might be better off Googling for an answer. -- ******************************************* Dr. Erik Zeek Postdoctoral Research Associate Department of Physics and Astronomy The University of Georgia Athens, GA 30602-2451 Tel: 706-542-7293 Email: mailto:[EMAIL PROTECTED] Html: http://www.physast.uga.edu/~zeekec ******************************************* Against stupidity the very gods Themselves contend in vain. - Johann Christoph Friedrich von Schiller (1801) *******************************************
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