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Larger WBUF still better on large DB

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This commit is contained in:
Howard Chu 2014-07-02 08:06:19 -07:00
parent 342cd72f25
commit af3c340758
1 changed files with 7 additions and 5 deletions
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12
libraries/liblmdb/mdb.c
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@ -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;