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authorRickard Green <[email protected]>2014-08-26 17:26:31 +0200
committerRickard Green <[email protected]>2014-09-25 16:42:20 +0200
commit6084a42a24fca52a5de2bc487c0cd2be46dcc21f (patch)
tree63fe33c074ccce7dd8bf51e846b9b778b81e4af5 /erts/emulator/beam/erl_init.c
parent65e335e255cb76d979f605ed34700e4e02041139 (diff)
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Introduce support for eager check I/O scheduling
Diffstat (limited to 'erts/emulator/beam/erl_init.c')
-rw-r--r--erts/emulator/beam/erl_init.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 8c4fffa75b..c3be23c84a 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -537,6 +537,8 @@ 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");
+ erts_fprintf(stderr, "-secio bool enable/disable eager check I/O scheduling,\n");
+ 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");
@@ -1487,6 +1489,19 @@ erl_start(int argc, char **argv)
erts_usage();
}
}
+ else if (has_prefix("ecio", sub_param)) {
+ arg = get_arg(sub_param+4, argv[i+1], &i);
+ if (sys_strcmp("true", arg) == 0)
+ erts_eager_check_io = 1;
+ else if (sys_strcmp("false", arg) == 0)
+ erts_eager_check_io = 0;
+ else {
+ erts_fprintf(stderr,
+ "bad schedule eager check I/O value '%s'\n",
+ arg);
+ erts_usage();
+ }
+ }
else if (has_prefix("pp", sub_param)) {
arg = get_arg(sub_param+2, argv[i+1], &i);
if (sys_strcmp(arg, "true") == 0)