Re: NUMA page allocation from next Node
Tharindu Rukshan Bamunuarachchi <[email protected]>
| Newsgroups | org.kernel.vger.linux-numa |
|---|---|
| Message-ID | <[email protected]> |
Andi/Lee/Tim/Scott/Cliff/Jiahua, Thankx a lot for your valuable inputs/advices. __ Tharindu R Bamunuarachchi. On Mon, Nov 1, 2010 at 11:30 PM, Andi Kleen <[email protected]> wrote: >> Because the SLIT on the IBM platform has distances > 20. Looks like IBM >> is populating the SLIT on those platforms with "real" values. The HP >> bios is not supplying a slit, letting the remote distances default to >> 20. That is the threshold for setting zone_reclaim_mode. A patch was >> submitted recently to bump the threshold to ~30. Now that vendors are >> starting to populate the SLIT with values > 20, we've begun to see the >> behavior that you experienced. > > I think it's intentional by the vendors: they use it a way to make > Linux behave like they want. > > -Andi >