From af3c3407585fe9a75e750434135645512f58d846 Mon Sep 17 00:00:00 2001 From: Howard Chu Date: Wed, 2 Jul 2014 08:06:19 -0700 Subject: [PATCH] Larger WBUF still better on large DB --- libraries/liblmdb/mdb.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c index 6ea9ebc7e6..5becba299a 100644 --- a/libraries/liblmdb/mdb.c +++ b/libraries/liblmdb/mdb.c @@ -8010,7 +8010,9 @@ mdb_put(MDB_txn *txn, MDB_dbi dbi, return mdb_cursor_put(&mc, key, data, flags); } -#define WBUF (64*1024) +#ifndef MDB_WBUF +#define MDB_WBUF (1024*1024) +#endif typedef struct mdb_copy { pthread_mutex_t mc_mutex[2]; @@ -8151,7 +8153,7 @@ mdb_env_cwalk(mdb_copy *my, pgno_t pg) rc = mdb_page_get(txn, pg, &omp, NULL); if (rc) goto done; - if (my->mc_wlen[toggle] >= WBUF) { + if (my->mc_wlen[toggle] >= MDB_WBUF) { rc = mdb_env_cthr_toggle(my); if (rc) goto done; @@ -8204,7 +8206,7 @@ again: ni = NODEPTR(mc.mc_pg[mc.mc_top-1], mc.mc_ki[mc.mc_top-1]); SETPGNO(ni, my->mc_next_pgno); } - if (my->mc_wlen[toggle] >= WBUF) { + if (my->mc_wlen[toggle] >= MDB_WBUF) { rc = mdb_env_cthr_toggle(my); if (rc) goto done; @@ -8231,11 +8233,11 @@ mdb_env_copyfd2(MDB_env *env, HANDLE fd) pthread_t thr; int rc; - rc = posix_memalign(&my.mc_free, env->me_psize, WBUF*2); + rc = posix_memalign(&my.mc_free, env->me_psize, MDB_WBUF*2); if (rc) return rc; my.mc_wbuf[0] = my.mc_free; - my.mc_wbuf[1] = my.mc_free + WBUF; + my.mc_wbuf[1] = my.mc_free + MDB_WBUF; pthread_mutex_init(&my.mc_mutex[0], NULL); pthread_mutex_init(&my.mc_mutex[1], NULL); my.mc_wlen[0] = 0; -- 2.39.5