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-rw-r--r--erts/emulator/beam/erl_init.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 1af80dd04b..1d4f617746 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -537,6 +537,12 @@ void erts_usage(void)
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");
+#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT
+ erts_fprintf(stderr, "-sub bool enable/disable scheduler utilization balancing,\n");
+#else
+ erts_fprintf(stderr, "-sub false disable scheduler utilization balancing,\n");
+#endif
+ erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
erts_fprintf(stderr, "-sws val set scheduler wakeup strategy, valid values are:\n");
erts_fprintf(stderr, " default|legacy.\n");
erts_fprintf(stderr, "-swct val set scheduler wake cleanup threshold, valid values are:\n");
@@ -1512,6 +1518,26 @@ erl_start(int argc, char **argv)
erts_usage();
}
}
+ else if (has_prefix("ub", sub_param)) {
+ arg = get_arg(sub_param+2, argv[i+1], &i);
+ if (sys_strcmp("true", arg) == 0) {
+#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT
+ erts_sched_balance_util = 1;
+#else
+ erts_fprintf(stderr,
+ "scheduler utilization balancing not "
+ "supported on this system\n");
+ erts_usage();
+#endif
+ }
+ else if (sys_strcmp("false", arg) == 0)
+ erts_sched_balance_util = 0;
+ else {
+ erts_fprintf(stderr, "bad scheduler utilization balancing "
+ " value '%s'\n", arg);
+ erts_usage();
+ }
+ }
else if (has_prefix("wct", sub_param)) {
arg = get_arg(sub_param+3, argv[i+1], &i);
if (erts_sched_set_wake_cleanup_threshold(arg) != 0) {