Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [PATCH] change global zonelist order on NUMA v2 | Date | Thu, 26 Apr 2007 11:47:44 +0200 |
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On Thursday 26 April 2007 11:34:17 KAMEZAWA Hiroyuki wrote: > > Changelog from V1 -> V2 > - sysctl name is changed to be relaxed_zone_order > - NORMAL->NORMAL->....->DMA->DMA->DMA order (new ordering) is now default. > NORMAL->DMA->NORMAL->DMA order (old ordering) is optional. > - addes boot opttion to set relaxed_zone_order. ia64 is supported now. > - Added documentation > > patch is against 2.6.21-rc7-mm2. tested on ia64 NUMA box. works well.
IMHO the change should be default (without any options) unless someone can come up with a good reason why not. On x86-64 it should be definitely default.
If there is a good reason on some architecture or machine a user option is also not a good idea, but instead it should be set automatically by that architecture or machine on boot.
-Andi
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