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authorRaghavendra G <raghavendra@gluster.com>2009-10-28 18:42:35 +0000
committerAnand V. Avati <avati@dev.gluster.com>2009-10-28 23:00:39 -0700
commit53ff4f0299cf14c6c413d3e49991a6f05f9cda19 (patch)
tree62d74188e56d23d4076aa7da7df151e39067f7bd
parent07e8d8a37713d39f63713d8c05dd99a0610a3c35 (diff)
libglusterfs/rbtree: change rbthash_init_table to take no of expected entries in the hash table as argument.
- the expected number of entries is used to create the memory pool of the hash table. Having constant macro for this purpose is not suitable since different users of rbtree based hash table store different number of entries in the table. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 335 (Io-cache optimization) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=335
-rw-r--r--libglusterfs/src/rbthash.c5
-rw-r--r--libglusterfs/src/rbthash.h4
-rw-r--r--xlators/performance/io-cache/src/ioc-inode.c13
-rw-r--r--xlators/performance/stat-prefetch/src/stat-prefetch.c7
4 files changed, 19 insertions, 10 deletions
diff --git a/libglusterfs/src/rbthash.c b/libglusterfs/src/rbthash.c
index 829257448..c2cbf99b4 100644
--- a/libglusterfs/src/rbthash.c
+++ b/libglusterfs/src/rbthash.c
@@ -80,7 +80,8 @@ err:
rbthash_table_t *
-rbthash_table_init (int buckets, rbt_hasher_t hfunc, rbt_data_destroyer_t dfunc)
+rbthash_table_init (int buckets, rbt_hasher_t hfunc, rbt_data_destroyer_t dfunc,
+ unsigned long expected_entries)
{
rbthash_table_t *newtab = NULL;
int ret = -1;
@@ -100,7 +101,7 @@ rbthash_table_init (int buckets, rbt_hasher_t hfunc, rbt_data_destroyer_t dfunc)
goto free_newtab;
}
- newtab->entrypool = mem_pool_new (rbthash_entry_t, GF_RBTHASH_MEMPOOL);
+ newtab->entrypool = mem_pool_new (rbthash_entry_t, expected_entries);
if (!newtab->entrypool) {
gf_log (GF_RBTHASH, GF_LOG_ERROR,"Failed to allocate mem-pool");
goto free_buckets;
diff --git a/libglusterfs/src/rbthash.h b/libglusterfs/src/rbthash.h
index 5bfa6afd0..f2200f895 100644
--- a/libglusterfs/src/rbthash.h
+++ b/libglusterfs/src/rbthash.h
@@ -26,7 +26,7 @@
#include <pthread.h>
-#define GF_RBTHASH_MEMPOOL 1048576
+#define GF_RBTHASH_MEMPOOL 16384 //1048576
#define GF_RBTHASH "rbthash"
struct rbthash_bucket {
@@ -56,7 +56,7 @@ typedef struct rbthash_table {
extern rbthash_table_t *
rbthash_table_init (int buckets, rbt_hasher_t hfunc,
- rbt_data_destroyer_t dfunc);
+ rbt_data_destroyer_t dfunc, unsigned long expected_entries);
extern int
rbthash_insert (rbthash_table_t *tbl, void *data, void *key, int keylen);
diff --git a/xlators/performance/io-cache/src/ioc-inode.c b/xlators/performance/io-cache/src/ioc-inode.c
index 356afc583..e647b3183 100644
--- a/xlators/performance/io-cache/src/ioc-inode.c
+++ b/xlators/performance/io-cache/src/ioc-inode.c
@@ -166,18 +166,23 @@ ioc_inode_wakeup (call_frame_t *frame, ioc_inode_t *ioc_inode,
ioc_inode_t *
ioc_inode_update (ioc_table_t *table, inode_t *inode, uint32_t weight)
{
- ioc_inode_t *ioc_inode = NULL;
-
+ ioc_inode_t *ioc_inode = NULL;
+ unsigned long no_of_pages = 0;
+
ioc_inode = CALLOC (1, sizeof (ioc_inode_t));
if (ioc_inode == NULL) {
goto out;
}
ioc_inode->table = table;
-
+
+ no_of_pages = (table->cache_size / table->page_size)
+ + ((table->cache_size % table->page_size) ? 1 : 0);
+
/* initialize the list for pages */
ioc_inode->cache.page_table = rbthash_table_init (IOC_PAGE_TABLE_BUCKET_COUNT,
- ioc_hashfn, NULL);
+ ioc_hashfn, NULL,
+ no_of_pages);
if (ioc_inode->cache.page_table == NULL) {
FREE (ioc_inode);
ioc_inode = NULL;
diff --git a/xlators/performance/stat-prefetch/src/stat-prefetch.c b/xlators/performance/stat-prefetch/src/stat-prefetch.c
index fe81b3e08..d6e8bad1e 100644
--- a/xlators/performance/stat-prefetch/src/stat-prefetch.c
+++ b/xlators/performance/stat-prefetch/src/stat-prefetch.c
@@ -20,6 +20,7 @@
#include "stat-prefetch.h"
#define GF_SP_CACHE_BUCKETS 4096
+#define GF_SP_CACHE_ENTRIES_EXPECTED 1048576
int32_t
sp_process_inode_ctx (call_frame_t *frame, xlator_t *this, loc_t *loc,
@@ -129,7 +130,8 @@ sp_cache_init (void)
if (cache) {
cache->table = rbthash_table_init (GF_SP_CACHE_BUCKETS,
sp_hashfn,
- free);
+ free,
+ GF_SP_CACHE_ENTRIES_EXPECTED);
if (cache->table == NULL) {
FREE (cache);
cache = NULL;
@@ -170,7 +172,8 @@ sp_cache_remove_entry (sp_cache_t *cache, char *name, char remove_all)
table = cache->table;
cache->table = rbthash_table_init (GF_SP_CACHE_BUCKETS,
sp_hashfn,
- free);
+ free,
+ GF_SP_CACHE_ENTRIES_EXPECTED);
if (cache->table == NULL) {
cache->table = table;
} else {