diff options
Diffstat (limited to 'c/src/exec/libfs/src/imfs')
-rw-r--r-- | c/src/exec/libfs/src/imfs/imfs.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/c/src/exec/libfs/src/imfs/imfs.h b/c/src/exec/libfs/src/imfs/imfs.h index 585c070594..38c770a325 100644 --- a/c/src/exec/libfs/src/imfs/imfs.h +++ b/c/src/exec/libfs/src/imfs/imfs.h @@ -66,9 +66,21 @@ typedef struct { * * block_ptr is a pointer to a block of IMFS_MEMFILE_BYTES_PER_BLOCK in * length which could be data or a table of pointers to blocks. + * + * Setting IMFS_MEMFILE_BYTES_PER_BLOCK to different values has a significant + * impact on the maximum file size supported as well as the amount of + * memory wasted due to internal file fragmentation. The following + * is a list of maximum file sizes based on various settings + * + * max_filesize with blocks of 16 is 1,328 + * max_filesize with blocks of 32 is 18,656 + * max_filesize with blocks of 64 is 279,488 + * max_filesize with blocks of 128 is 4,329,344 + * max_filesize with blocks of 256 is 68,173,568 + * max_filesize with blocks of 512 is 1,082,195,456 */ -#define IMFS_MEMFILE_BYTES_PER_BLOCK 64 /* 512 */ +#define IMFS_MEMFILE_BYTES_PER_BLOCK 128 #define IMFS_MEMFILE_BLOCK_SLOTS \ (IMFS_MEMFILE_BYTES_PER_BLOCK / sizeof(void *)) |