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-rw-r--r--erts/doc/src/erl.xml2
-rw-r--r--erts/emulator/beam/erl_init.c6
2 files changed, 5 insertions, 3 deletions
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index 5352fad143..b069b85be5 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -479,7 +479,7 @@
<tag><marker id="async_thread_pool_size"><c><![CDATA[+A size]]></c></marker></tag>
<item>
<p>Sets the number of threads in async thread pool, valid range
- is 0-1024. Default is 0.</p>
+ is 0-1024. If thread support is available, the default is 10.</p>
</item>
<tag><c><![CDATA[+B [c | d | i]]]></c></tag>
<item>
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 1fdaba548f..516f7b3cb3 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -55,6 +55,8 @@
# include <sys/resource.h>
#endif
+#define ERTS_DEFAULT_NO_ASYNC_THREADS 10
+
/*
* The variables below (prefixed with etp_) are for erts/etc/unix/etp-commands
* only. Do not remove even though they aren't used elsewhere in the emulator!
@@ -631,7 +633,7 @@ early_init(int *argc, char **argv) /*
erts_disable_tolerant_timeofday = 0;
display_items = 200;
erts_backtrace_depth = DEFAULT_BACKTRACE_SIZE;
- erts_async_max_threads = 0;
+ erts_async_max_threads = ERTS_DEFAULT_NO_ASYNC_THREADS;
erts_async_thread_suggested_stack_size = ERTS_ASYNC_THREAD_MIN_STACK_SIZE;
H_MIN_SIZE = H_DEFAULT_SIZE;
BIN_VH_MIN_SIZE = VH_DEFAULT_SIZE;
@@ -700,7 +702,7 @@ early_init(int *argc, char **argv) /*
if (erts_sys_getenv__("ERL_THREAD_POOL_SIZE", envbuf, &envbufsz) == 0)
erts_async_max_threads = atoi(envbuf);
else
- erts_async_max_threads = 0;
+ erts_async_max_threads = ERTS_DEFAULT_NO_ASYNC_THREADS;
if (erts_async_max_threads > ERTS_MAX_NO_OF_ASYNC_THREADS)
erts_async_max_threads = ERTS_MAX_NO_OF_ASYNC_THREADS;