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-rw-r--r--lib/debugger/doc/src/debugger_chapter.xml18
-rw-r--r--lib/debugger/doc/src/int.xml4
-rw-r--r--lib/debugger/src/dbg_iserver.erl2
3 files changed, 11 insertions, 13 deletions
diff --git a/lib/debugger/doc/src/debugger_chapter.xml b/lib/debugger/doc/src/debugger_chapter.xml
index 67e95cd083..2d812b0236 100644
--- a/lib/debugger/doc/src/debugger_chapter.xml
+++ b/lib/debugger/doc/src/debugger_chapter.xml
@@ -274,17 +274,15 @@ c_break(Bindings) ->
<seealso marker="#attach">the Attach Process window</seealso>.
</p>
- <p>By default, the Debugger saves information about all current
+ <p>By default, the Debugger only saves information about recursive
function calls, that is, function calls that have not yet returned
- a value (option 'Stack On, Tail').</p>
-
- <p>This means, however, that information is saved also for tail
- recursive calls. For example, repeated calls to the <c>loop</c>
- function of an Erlang process. This may consume unnecessary
- amounts of memory for debugged processes with long lifetimes and
- many tail recursive calls. It is therefore possible to set
- the option 'Stack On, no tail', in which case information about
- previous calls are discarded when a tail recursive call is made.
+ a value (option 'Stack On, No Tail').</p>
+
+ <p>Sometimes, however, it can be useful to save all calls, even
+ tail-recursive calls. That can be done with the 'Stack On, Tail'
+ option. Note that this option will consume more memory and slow
+ down execution of interpreted functions when there are many
+ tail-recursive calls.
</p>
<p>It is also possible to turn off the Debugger stack trace
diff --git a/lib/debugger/doc/src/int.xml b/lib/debugger/doc/src/int.xml
index 8b55461a44..c9d815755d 100644
--- a/lib/debugger/doc/src/int.xml
+++ b/lib/debugger/doc/src/int.xml
@@ -284,12 +284,12 @@ spawn(Module, Name, [Pid | Args])
<list>
<item><c>all</c> - save information about all current calls,
that is, function calls that have not yet returned a value.
- This is the default.</item>
+ </item>
<item><c>no_tail</c> - save information about current calls,
but discard previous information when a tail recursive call
is made. This option consumes less memory and may be
necessary to use for processes with long lifetimes and many
- tail recursive calls.</item>
+ tail recursive calls. This is the default.</item>
<item><c>false</c> - do not save any information about current
calls.</item>
</list>
diff --git a/lib/debugger/src/dbg_iserver.erl b/lib/debugger/src/dbg_iserver.erl
index 55ac1cef94..1bb73a43b9 100644
--- a/lib/debugger/src/dbg_iserver.erl
+++ b/lib/debugger/src/dbg_iserver.erl
@@ -114,7 +114,7 @@ init([]) ->
process_flag(trap_exit, true),
global:register_name(?MODULE, self()),
Db = ets:new(?MODULE, [ordered_set, protected]),
- {ok, #state{db=Db, auto=false, stack=all}}.
+ {ok, #state{db=Db, auto=false, stack=no_tail}}.
%% Attaching to a process
handle_call({attached, AttPid, Pid}, _From, State) ->