diff --git a/lualib/skynet.lua b/lualib/skynet.lua
index 54bd3e51..e039888a 100644
--- a/lualib/skynet.lua
+++ b/lualib/skynet.lua
@@ -138,10 +138,14 @@ function skynet.starttime()
 end
 
 function skynet.exit()
+	skynet.send(".launcher","lua","REMOVE",skynet.self())
 	c.command("EXIT")
 end
 
 function skynet.kill(name)
+	if type(name) == "number" then
+		name = skynet.address(name)
+	end
 	c.command("KILL",name)
 end
 
@@ -245,7 +249,8 @@ local function dispatch_message(prototype, msg, sz, session, source, ...)
 end
 
 function skynet.newservice(name, ...)
-	local handle = skynet.call(".launcher", "lua" , "snlua", name, ...)
+	local param =  table.concat({"snlua", name, ...}, " ")
+	local handle = skynet.call(".launcher", "text" , param)
 	return handle
 end
 
@@ -360,6 +365,25 @@ do
 	}
 end
 
+----- debug
+
+local dbgcmd = {}
+
+function dbgcmd.MEM()
+	local kb, bytes = collectgarbage "count"
+	skynet.ret(skynet.pack(kb,bytes))
+end
+
+function dbgcmd.GC()
+	collectgarbage "collect"
+end
+
+local function _debug_dispatch(session, address, cmd, ...)
+	local f = dbgcmd[cmd]
+	assert(f, cmd)
+	f(...)
+end
+
 ----- register protocol
 do
 	local REG = skynet.register_protocol
@@ -391,6 +415,14 @@ do
 		name = "response",
 		id = 1,
 	}
+
+	REG {
+		name = "debug",
+		id = 9,
+		pack = skynet.pack,
+		unpack = skynet.unpack,
+		dispatch = _debug_dispatch,
+	}
 end
 
 local init_func = {}
@@ -428,7 +460,7 @@ function skynet.start(start_func)
 	c.callback(dispatch_message)
 	skynet.timeout(0, function()
         init_template(start_func)
-		skynet.send(".launcher","lua", nil)
+		skynet.send(".launcher","text", "")
 	end)
 end
 
@@ -438,7 +470,7 @@ function skynet.filter(f ,start_func)
 	end)
 	skynet.timeout(0, function()
         init_template(start_func)
-		skynet.send(".launcher","lua", nil)
+		skynet.send(".launcher","text", "")
 	end)
 end
 
diff --git a/service/console.lua b/service/console.lua
index f7669273..effaa462 100644
--- a/service/console.lua
+++ b/service/console.lua
@@ -15,10 +15,7 @@ local function split_package()
 	while true do
 		local cmd = readline "\n"
 		if cmd ~= "" then
-			local handle = skynet.launch("snlua", cmd)
-			if handle == nil then
-				print("Launch error:",cmd)
-			end
+			skynet.send(skynet.self(), "text", cmd)
 		end
 	end
 end
@@ -39,5 +36,11 @@ skynet.register_protocol {
 
 
 skynet.start(function()
+	skynet.dispatch("text", function (session, address, cmd)
+		local handle = skynet.newservice(cmd)
+		if handle == nil then
+			print("Launch error:",cmd)
+		end
+	end)
 	socket.stdin()
 end)
diff --git a/service/dbg.lua b/service/dbg.lua
new file mode 100644
index 00000000..e4b42dc2
--- /dev/null
+++ b/service/dbg.lua
@@ -0,0 +1,11 @@
+local skynet = require "skynet"
+
+local cmd = { ... }
+
+skynet.start(function()
+	local list = skynet.call(".launcher","lua", unpack(cmd))
+	for k,v in pairs(list) do
+		print(k,v)
+	end
+	skynet.exit()
+end)
\ No newline at end of file
diff --git a/service/launcher.lua b/service/launcher.lua
index 8af6cc59..98d9561f 100644
--- a/service/launcher.lua
+++ b/service/launcher.lua
@@ -1,13 +1,51 @@
 local skynet = require "skynet"
 local string = string
 
+local services = {}
+
+local command = {}
+
+function command.LIST()
+	local list = {}
+	for k,v in pairs(services) do
+		list[skynet.address(k)] = v
+	end
+	skynet.ret(skynet.pack(list))
+end
+
+function command.KILL(handle)
+	skynet.kill(handle)
+	skynet.ret( skynet.pack({ [handle] = tostring(services[handle]) }))
+	services[handle] = nil
+end
+
+function command.MEM()
+	local list = {}
+	for k,v in pairs(services) do
+		local kb, bytes = skynet.call(k,"debug","MEM")
+		list[skynet.address(k)] = string.format("%d Kb (%s)",kb,v)
+	end
+	skynet.ret(skynet.pack(list))
+end
+
+function command.GC()
+	for k,v in pairs(services) do
+		skynet.send(k,"debug","GC")
+	end
+	command.MEM()
+end
+
+function command.REMOVE(handle)
+	services[handle] = nil
+end
+
 local instance = {}
 
 skynet.register(".launcher")
 
 skynet.start(function()
-	skynet.dispatch("lua" , function(session, address , service, ...)
-		if service == nil then
+	skynet.dispatch("text" , function(session, address , cmd)
+		if cmd == "" then
 			-- init notice
 			local reply = instance[address]
 			if reply then
@@ -16,13 +54,18 @@ skynet.start(function()
 			end
 		else
 			-- launch request
-			local param =  table.concat({...}, " ")
+			local service, param = string.match(cmd,"([^ ]+) (.*)")
 			local inst = skynet.launch(service, param)
 			if inst then
+				services[inst] = cmd
 				instance[inst] = { session = session, address = address }
 			else
 				skynet.ret(skynet.pack(nil))
 			end
 		end
 	end)
+	skynet.dispatch("lua", function(session, address, cmd , ...)
+		cmd = string.upper(cmd)
+		command[cmd](...)
+	end)
 end)
diff --git a/skynet-src/skynet_server.c b/skynet-src/skynet_server.c
index 79bf6c3e..d5a7bda3 100644
--- a/skynet-src/skynet_server.c
+++ b/skynet-src/skynet_server.c
@@ -394,6 +394,7 @@ skynet_command(struct skynet_context * context, const char * cmd , const char *
 		} else if (param[0] == '.') {
 			handle = skynet_handle_findname(param+1);
 		} else {
+			skynet_error(context, "Can't kill %s",param);
 			// todo : kill global service
 		}
 		if (handle) {
diff --git a/skynet-src/skynet_start.c b/skynet-src/skynet_start.c
index 509669cb..c0e9eb62 100644
--- a/skynet-src/skynet_start.c
+++ b/skynet-src/skynet_start.c
@@ -84,7 +84,7 @@ skynet_start(struct skynet_config * config) {
 	}
 	ctx = skynet_context_new("snlua", "launcher");
 	if (ctx == NULL) {
-		fprintf(stderr,"launch launcher error");
+		fprintf(stderr,"launch launcher error\n");
 		exit(1);
 	}
 	ctx = skynet_context_new("snlua", config->start);