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authorRaghavendra G <raghavendra@gluster.com>2009-10-07 03:44:00 +0000
committerAnand V. Avati <avati@dev.gluster.com>2009-10-07 02:36:27 -0700
commita9151c7c398f755abca20ec1055909f4ab4f3e0f (patch)
treedcc94b17e4de234e097462859a72654be5af7bfd /xlators/performance/stat-prefetch/src/stat-prefetch.c
parentfee63b09862e228eb95f5354c533d237e3a462b7 (diff)
performance/stat-prefetch: optimizations to sp_lookup.
- if stat cache cannot be found for a path in its parent inode and the path is a directory, we can get the cache from the inode corresponding to path and look for "." in that cache. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 284 (performance actually decreases for 'ls -l' on a directory containing large number of files with stat-prefetch loaded) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=284
Diffstat (limited to 'xlators/performance/stat-prefetch/src/stat-prefetch.c')
-rw-r--r--xlators/performance/stat-prefetch/src/stat-prefetch.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/xlators/performance/stat-prefetch/src/stat-prefetch.c b/xlators/performance/stat-prefetch/src/stat-prefetch.c
index 1b19a58d1..c5d05c4ae 100644
--- a/xlators/performance/stat-prefetch/src/stat-prefetch.c
+++ b/xlators/performance/stat-prefetch/src/stat-prefetch.c
@@ -543,7 +543,18 @@ sp_lookup (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xattr_req)
op_errno = 0;
lookup_behind = 1;
}
- }
+ } else if (S_ISDIR (loc->inode->st_mode)) {
+ cache = sp_get_cache_inode (this, loc->inode, frame->root->pid);
+ if (cache) {
+ ret = sp_cache_get_entry (cache, ".", &dirent);
+ if (ret == 0) {
+ buf = &dirent.d_stat;
+ op_ret = 0;
+ op_errno = 0;
+ lookup_behind = 1;
+ }
+ }
+ }
wind:
if (lookup_behind) {