[Mesa-stable] [Mesa-dev] [PATCH 1/2] disk_cache: reduce default cache size to 5% of filesystem

[Michel Dänzer]

On 27/04/17 10:15 AM, Timothy Arceri wrote:
> Modern disks are extremely large and are only going to get bigger.
> Usage has shown frequent Mesa upgrades can result in the cache
> growing very fast i.e. wasting a lot of disk space unnecessarily.
> 
> 5% seems like a more reasonable default.
> 
> Cc: "17.1" <mesa-stable at lists.freedesktop.org>
> ---
>  src/util/disk_cache.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/src/util/disk_cache.c b/src/util/disk_cache.c
> index d9de8ef..9fd7b96 100644
> --- a/src/util/disk_cache.c
> +++ b/src/util/disk_cache.c
> @@ -324,24 +324,24 @@ disk_cache_create(const char *gpu_name, const char *timestamp)
>           case '\0':
>           case 'G':
>           case 'g':
>           default:
>              max_size *= 1024*1024*1024;
>              break;
>           }
>        }
>     }
>  
> -   /* Default to 1GB or 10% of filesystem for maximum cache size. */
> +   /* Default to 1GB or 5% of filesystem for maximum cache size. */
>     if (max_size == 0) {
>        statvfs(path, &vfs);
> -      max_size = MAX2(1024*1024*1024, vfs.f_blocks * vfs.f_bsize / 10);
> +      max_size = MAX2(1024*1024*1024, vfs.f_blocks * vfs.f_bsize / 20);
>     }

5% can still be quite a lot (what if every library on the system tried
using that much for itself?). How about 1%?

Anyway, this is a step in the right direction, so

Acked-by: Michel Dänzer <michel.daenzer at amd.com>


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer