aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/beam/erl_init.c
diff options
context:
space:
mode:
Diffstat (limited to 'erts/emulator/beam/erl_init.c')
-rw-r--r--erts/emulator/beam/erl_init.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 14bd10b42c..4ae656a3ad 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -512,6 +512,8 @@ void erts_usage(void)
erts_fprintf(stderr, " u|ns|ts|ps|s|nnts|nnps|tnnps|db\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");
+ erts_fprintf(stderr, " very_low|low|medium|high|very_high.\n");
erts_fprintf(stderr, "-sss size suggested stack size in kilo words for scheduler threads,\n");
erts_fprintf(stderr, " valid range is [%d-%d]\n",
ERTS_SCHED_THREAD_MIN_STACK_SIZE,
@@ -1176,10 +1178,20 @@ erl_start(int argc, char **argv)
}
else if (sys_strcmp("mrq", sub_param) == 0)
use_multi_run_queue = 1;
- else if (sys_strcmp("srq", sub_param) == 0)
- use_multi_run_queue = 0;
else if (sys_strcmp("nsp", sub_param) == 0)
erts_use_sender_punish = 0;
+ else if (sys_strcmp("srq", sub_param) == 0)
+ use_multi_run_queue = 0;
+ else if (sys_strcmp("wt", sub_param) == 0) {
+ arg = get_arg(sub_param+2, argv[i+1], &i);
+ if (erts_sched_set_wakeup_limit(arg) != 0) {
+ erts_fprintf(stderr, "scheduler wakeup threshold: %s\n",
+ arg);
+ erts_usage();
+ }
+ VERBOSE(DEBUG_SYSTEM,
+ ("scheduler wakup threshold: %s\n", arg));
+ }
else if (has_prefix("ss", sub_param)) {
/* suggested stack size (Kilo Words) for scheduler threads */
arg = get_arg(sub_param+2, argv[i+1], &i);