From ac7dcc23af68ef5a01ce5ca03ad485595bf5e18b Mon Sep 17 00:00:00 2001 From: Rickard Green Date: Wed, 9 Nov 2011 17:21:20 +0100 Subject: Add switch that can disable scheduler compaction of load --- erts/emulator/beam/erl_init.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (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 0a57eb6d88..02efd2adb6 100644 --- a/erts/emulator/beam/erl_init.c +++ b/erts/emulator/beam/erl_init.c @@ -510,6 +510,8 @@ void erts_usage(void) erts_fprintf(stderr, "-rg amount set reader groups limit\n"); erts_fprintf(stderr, "-sbt type set scheduler bind type, valid types are:\n"); erts_fprintf(stderr, " u|ns|ts|ps|s|nnts|nnps|tnnps|db\n"); + erts_fprintf(stderr, "-scl bool enable/disable compaction of scheduler load,\n"); + erts_fprintf(stderr, " see the erl(1) documentation for more info.\n"); erts_fprintf(stderr, "-sct cput set cpu topology,\n"); erts_fprintf(stderr, " see the erl(1) documentation for more info.\n"); erts_fprintf(stderr, "-swt val set scheduler wakeup threshold, valid values are:\n"); @@ -605,6 +607,7 @@ early_init(int *argc, char **argv) /* int max_reader_groups; int reader_groups; + erts_sched_compact_load = 1; use_multi_run_queue = 1; erts_printf_eterm_func = erts_printf_term; erts_disable_tolerant_timeofday = 0; @@ -1150,6 +1153,19 @@ erl_start(int argc, char **argv) erts_usage(); } } + else if (has_prefix("cl", sub_param)) { + arg = get_arg(sub_param+2, argv[i+1], &i); + if (sys_strcmp("true", arg) == 0) + erts_sched_compact_load = 1; + else if (sys_strcmp("false", arg) == 0) + erts_sched_compact_load = 0; + else { + erts_fprintf(stderr, + "bad scheduler compact load value '%s'\n", + arg); + erts_usage(); + } + } else if (has_prefix("ct", sub_param)) { arg = get_arg(sub_param+2, argv[i+1], &i); res = erts_init_cpu_topology_string(arg); -- cgit v1.2.3