5 ms·

Switch to PowerPC and get 64k pages by default in most distros!

• deleted 13y ago
  [deleted]
• rwmj 13y ago
  .. and exposing lots of buggy userspace code into the bargain!
  • dmm 13y ago
    What kind of bugs appear with bigger default page sizes?
    • rwmj 13y ago
      Lots of userspace makes assumptions about page size being 4k and breaks when it changes. Try looking for: https://www.google.co.uk/search?q="pagesize"+"64k"+"bug" https://www.google.co.uk/search?q="pagesize"+"64k"+"bug" https://www.google.co.uk/search?q="pagesize"+"64k"+"issue" https://www.google.co.uk/search?q="pagesize"+"64k"+"issue" Another common one is actually in the kernel where filesystem block sizes are limited to page sizes, so from this point of view large page sizes are better: https://lwn.net/Articles/591690/ https://lwn.net/Articles/591690/
• codys 13y ago
  And an even slower page fault mechanism. PPC generally ends up relying on hugepages to try to match pagefault speeds on x86