From 454335cd043561cc9fe874bc325c152a0727328b Mon Sep 17 00:00:00 2001 From: Sverker Eriksson Date: Tue, 2 Nov 2010 18:08:04 +0100 Subject: ETS 'compressed' option. The compressed format is using a slighty modified variant of the extern format (term_to_binary). To not worsen key lookup's too much, the top tuple itself and the key element are not compressed. Table objects with only immediate non-key elements will therefor not gain anything (but actually consume one extra word for "alloc_size"). --- erts/emulator/beam/erl_init.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) (limited to 'erts/emulator/beam/erl_init.c') diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c index a2fd5921a2..a9f4f041ac 100644 --- a/erts/emulator/beam/erl_init.c +++ b/erts/emulator/beam/erl_init.c @@ -807,6 +807,7 @@ early_init(int *argc, char **argv) /* erl_sys_args(argc, argv); erts_ets_realloc_always_moves = 0; + erts_ets_always_compress = 0; erts_dist_buf_busy_limit = ERTS_DE_BUSY_LIMIT; return ncpu; @@ -1028,15 +1029,20 @@ erl_start(int argc, char **argv) break; case 'e': - /* set maximum number of ets tables */ - arg = get_arg(argv[i]+2, argv[i+1], &i); - if (( user_requested_db_max_tabs = atoi(arg) ) < 0) { - erts_fprintf(stderr, "bad maximum number of ets tables %s\n", arg); - erts_usage(); + if (sys_strcmp("c", argv[i]+2) == 0) { + erts_ets_always_compress = 1; + } + else { + /* set maximum number of ets tables */ + arg = get_arg(argv[i]+2, argv[i+1], &i); + if (( user_requested_db_max_tabs = atoi(arg) ) < 0) { + erts_fprintf(stderr, "bad maximum number of ets tables %s\n", arg); + erts_usage(); + } + VERBOSE(DEBUG_SYSTEM, + ("using maximum number of ets tables %d\n", + user_requested_db_max_tabs)); } - VERBOSE(DEBUG_SYSTEM, - ("using maximum number of ets tables %d\n", - user_requested_db_max_tabs)); break; case 'i': -- cgit v1.2.3