> For many HPC applications we are limited by the free available memory on > the smallest node, so even though the same amount of memory is used the > better balancing helps. > > Signed-off-by: Anton Blanchard <an...@samba.org> > ---
You have numbers ? :-) I'm asking mostly because I've been wondering whether it offsets the 16M pages vs. 4K or 64K pages in term of TLB/ERAT impact. Cheers, Ben. > diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h > index 95837bf..c0c63ee 100644 > --- a/include/linux/bootmem.h > +++ b/include/linux/bootmem.h > @@ -145,9 +145,10 @@ extern void *alloc_large_system_hash(const char > *tablename, > #define HASH_EARLY 0x00000001 /* Allocating during early boot? */ > > /* Only NUMA needs hash distribution. > - * IA64 and x86_64 have sufficient vmalloc space. > + * IA64, x86_64 and PowerPC have sufficient vmalloc space. > */ > -#if defined(CONFIG_NUMA) && (defined(CONFIG_IA64) || defined(CONFIG_X86_64)) > +#if defined(CONFIG_NUMA) && (defined(CONFIG_IA64) || defined(CONFIG_X86_64) > || \ > + defined(CONFIG_PPC64)) > #define HASHDIST_DEFAULT 1 > #else > #define HASHDIST_DEFAULT 0 > _______________________________________________ > Linuxppc-dev mailing list > Linuxppc-dev@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-dev _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
