diff options
Diffstat (limited to 'src/surface.c')
| -rw-r--r-- | src/surface.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/surface.c b/src/surface.c index e640c40..b8ed88e 100644 --- a/src/surface.c +++ b/src/surface.c @@ -32,6 +32,20 @@ void surface_init( MAP_SHARED, surface->shm_pool_fd, 0); +#ifdef __linux__ + /* + * On linux, ask for Transparent HugePages if available and our + * buffer's at least 2MiB. This can greatly speed up the first + * cairo_paint() by reducing page faults, but unfortunately is disabled + * for shared memory at the time of writing. + * + * MADV_HUGEPAGE isn't available on *BSD, which we could conceivably be + * running on. + */ + if (surface->shm_pool_size >= (2 << 20)) { + madvise(surface->shm_pool_data, surface->shm_pool_size, MADV_HUGEPAGE); + } +#endif surface->wl_shm_pool = wl_shm_create_pool( wl_shm, surface->shm_pool_fd, |