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| author | Chao Yu | 2015-08-19 13:13:25 +0200 |
|---|---|---|
| committer | Jaegeuk Kim | 2015-08-22 07:45:16 +0200 |
| commit | 029e13cc3221be4bc46909225142277fee52c37e (patch) | |
| tree | 6b649cc7932090fbb00ddab9a5b5eb6b8b40c843 /fs/f2fs/f2fs.h | |
| parent | f2fs: add largest/cached stat in extent cache (diff) | |
| download | kernel-qcow2-linux-029e13cc3221be4bc46909225142277fee52c37e.tar.gz kernel-qcow2-linux-029e13cc3221be4bc46909225142277fee52c37e.tar.xz kernel-qcow2-linux-029e13cc3221be4bc46909225142277fee52c37e.zip | |
f2fs: adjust showing of extent cache stat
This patch alters to replace total hit stat with rbtree hit stat,
and then adjust showing of extent cache stat:
Hit Count:
L1-1: for largest node hit count;
L1-2: for last cached node hit count;
L2: for extent node hit after lookuping in rbtree.
Hit Ratio:
ratio (hit count / total lookup count)
Inner Struct Count:
tree count, node count.
Before:
Extent Hit Ratio: 0 / 2
Extent Tree Count: 3
Extent Node Count: 2
Patched:
Exten Cacache:
- Hit Count: L1-1:4871 L1-2:2074 L2:208
- Hit Ratio: 1% (7153 / 550751)
- Inner Struct Count: tree: 26560, node: 11824
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index de20387ae225..66410178aba1 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -788,7 +788,7 @@ struct f2fs_sb_info { unsigned int block_count[2]; /* # of allocated blocks */ atomic_t inplace_count; /* # of inplace update */ atomic_t total_hit_ext; /* # of lookup extent cache */ - atomic_t read_hit_ext; /* # of hit extent cache */ + atomic_t read_hit_rbtree; /* # of hit rbtree extent node */ atomic_t read_hit_largest; /* # of hit largest extent node */ atomic_t read_hit_cached; /* # of hit cached extent node */ atomic_t inline_xattr; /* # of inline_xattr inodes */ @@ -1826,7 +1826,8 @@ struct f2fs_stat_info { struct f2fs_sb_info *sbi; int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; int main_area_segs, main_area_sections, main_area_zones; - int hit_largest, hit_cached, hit_ext, total_ext, ext_tree, ext_node; + int hit_largest, hit_cached, hit_rbtree, hit_total, total_ext; + int ext_tree, ext_node; int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; int nats, dirty_nats, sits, dirty_sits, fnids; int total_count, utilization; @@ -1863,7 +1864,7 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) #define stat_inc_total_hit(sbi) (atomic_inc(&(sbi)->total_hit_ext)) -#define stat_inc_read_hit(sbi) (atomic_inc(&(sbi)->read_hit_ext)) +#define stat_inc_rbtree_node_hit(sbi) (atomic_inc(&(sbi)->read_hit_rbtree)) #define stat_inc_largest_node_hit(sbi) (atomic_inc(&(sbi)->read_hit_largest)) #define stat_inc_cached_node_hit(sbi) (atomic_inc(&(sbi)->read_hit_cached)) #define stat_inc_inline_xattr(inode) \ @@ -1945,7 +1946,7 @@ void f2fs_destroy_root_stats(void); #define stat_inc_dirty_dir(sbi) #define stat_dec_dirty_dir(sbi) #define stat_inc_total_hit(sb) -#define stat_inc_read_hit(sb) +#define stat_inc_rbtree_node_hit(sb) #define stat_inc_largest_node_hit(sbi) #define stat_inc_cached_node_hit(sbi) #define stat_inc_inline_xattr(inode) |