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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-07-01 02:12:43 +0000 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2012-07-01 02:12:43 +0000 |
| commit | 13ea39a34766fcbecd96ab94bcdf798b08e9bb60 (patch) | |
| tree | 1e1463b03838a6f36868a4dafc7e652358a51857 /libpager/pager-memcpy.c | |
| parent | 1f8d504f631531c199d7c6154a0dc442d80ea4a7 (diff) | |
| parent | 7e15f3d69a83a34ac62cbbee944a0bfbfa92724e (diff) | |
| download | hurd-13ea39a34766fcbecd96ab94bcdf798b08e9bb60.tar.gz hurd-13ea39a34766fcbecd96ab94bcdf798b08e9bb60.tar.bz2 hurd-13ea39a34766fcbecd96ab94bcdf798b08e9bb60.zip | |
Merge branch 'master' into xkb
Conflicts:
config.make.in
configure.in
Diffstat (limited to 'libpager/pager-memcpy.c')
| -rw-r--r-- | libpager/pager-memcpy.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/libpager/pager-memcpy.c b/libpager/pager-memcpy.c index e5f4cdac..f2be5585 100644 --- a/libpager/pager-memcpy.c +++ b/libpager/pager-memcpy.c @@ -23,9 +23,10 @@ #include <assert.h> #include <string.h> -/* Start using vm_copy over memcpy when we have at a page. (This - value *cannot* be less than vm_page_size.) */ -#define VMCOPY_BETTER_THAN_MEMCPY (vm_page_size) +/* Start using vm_copy over memcpy when we have that many page. This is + roughly the L1 cache size. (This value *cannot* be less than + vm_page_size.) */ +#define VMCOPY_BETTER_THAN_MEMCPY (8*vm_page_size) /* Try to copy *SIZE bytes between the region OTHER points to and the region at OFFSET in the pager indicated by PAGER and MEMOBJ. @@ -42,8 +43,8 @@ pager_memcpy (struct pager *pager, memory_object_t memobj, error_t err; size_t n = *size; -#define VMCOPY_WINDOW_DEFAULT_SIZE (16 * vm_page_size) -#define MEMCPY_WINDOW_DEFAULT_SIZE (8 * vm_page_size) +#define VMCOPY_WINDOW_DEFAULT_SIZE (32 * vm_page_size) +#define MEMCPY_WINDOW_DEFAULT_SIZE (32 * vm_page_size) vm_address_t window; vm_size_t window_size; |