upstream/openldap
1
0
Fork 0
mirror of https://git.openldap.org/openldap/openldap.git synced 2026-02-13 15:54:04 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Turn off readahead on main mmap

Browse source 
It's harmful when the DB is larger than RAM.
This commit is contained in:
Howard Chu 2013-03-11 05:49:14 -07:00
parent d74330128a
commit b1da555c4c
1 changed files with 2 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
libraries/liblmdb/mdb.c
View file

@ -2870,6 +2870,8 @@ mdb_env_open2(MDB_env *env)
env->me_map = NULL;
return ErrCode();
}
/* Turn off readahead. It's harmful when the DB is larger than RAM. */
posix_madvise(env->me_map, env->me_mapsize, POSIX_MADV_RANDOM);
#endif
if (newenv) {