Andrea Arcangeli wrote: > On Fri, Mar 12, 2010 at 06:41:56PM +0000, Paul Brook wrote: > > Doesn't non-PAE (i.e. most 32-bit x86) use 4M huge pages? There's still a > > good > > number of those knocking about. > > Yep, but 32bit x86 host won't support transparent hugepage (certain > bits overflows in the kernel implementation, there's no more space in > the page struct). It's not worth it IMHO.
Perhaps the performance figures would be even more significant for 32-bit x86 than 64-bit, due to the smaller TLBs. I guess that's not what you mean by worth it? -- Jamie
