diff options
| -rw-r--r-- | lib/observer/doc/src/ttb.xml | 16 | ||||
| -rw-r--r-- | lib/observer/src/ttb.erl | 9 | ||||
| -rw-r--r-- | lib/runtime_tools/doc/src/dbg.xml | 2 | ||||
| -rw-r--r-- | lib/runtime_tools/src/dbg.erl | 2 |
4 files changed, 25 insertions, 4 deletions
diff --git a/lib/observer/doc/src/ttb.xml b/lib/observer/doc/src/ttb.xml index 42b0fa1d8a..7cd15e15d3 100644 --- a/lib/observer/doc/src/ttb.xml +++ b/lib/observer/doc/src/ttb.xml @@ -114,7 +114,8 @@ ttb:p(all, call).</input></pre> <v>Opt = {file,Client} | {handler, FormatHandler} | {process_info,PI} | shell | {shell, ShellSpec} | {timer, TimerSpec} | {overload_check, {MSec, Module, Function}} | - {flush, MSec} | resume | {resume, FetchTimeout}</v> + {flush, MSec} | resume | {resume, FetchTimeout} | + {queue_size, QueueSize}</v> <v>TimerSpec = MSec | {MSec, StopOpts}</v> <v>MSec = FetchTimeout = integer()</v> <v>Module = Function = atom() </v> @@ -126,6 +127,7 @@ ttb:p(all, call).</input></pre> <v>FormatHandler = See format/2</v> <v>PI = true | false </v> <v>ShellSpec = true | false | only</v> + <v>QueueSize = non_neg_integer()</v> </type> <desc> <p>Starts a file trace port on all specified nodes @@ -147,6 +149,18 @@ ttb:p(all, call).</input></pre> <c>Client</c> must be <c>{local, File}</c>. All trace information is then sent to the trace control node where it is written to file.</p></item> + <tag><c>queue_size</c></tag> + <item><p>When tracing to shell or <c>{local,File}</c>, an ip + trace driver is used internally. The ip trace driver has a + queue of maximum <c>QueueSize</c> messages waiting to be + delivered. If the driver cannot deliver messages as fast as + they are produced, the queue size might be exceeded and + messages are dropped. This parameter is optional, and is + only useful if many <c>{drop,N}</c> trace messages are + received by the trace handler. It has no meaning if shell + or <c>{local,File}</c> is not used. See + <seealso marker="runtime_tools:dbg#trace_port/2">dbg:trace_port/2</seealso> + for more information about the ip trace driver.</p></item> <tag><c>process_info</c></tag> <item><p>Indicates if process information is to be collected. If <c>PI = true</c> (which is diff --git a/lib/observer/src/ttb.erl b/lib/observer/src/ttb.erl index ac6c4572eb..87a50e046b 100644 --- a/lib/observer/src/ttb.erl +++ b/lib/observer/src/ttb.erl @@ -78,6 +78,11 @@ do_tracer(Nodes0,PI,Client,Traci) -> do_tracer(Clients,PI,Traci) -> Shell = proplists:get_value(shell, Traci, false), + IpPortSpec = + case proplists:get_value(queue_size, Traci) of + undefined -> 0; + QS -> {0,QS} + end, DefShell = fun(Trace) -> dbg:dhandler(Trace, standard_io) end, {ClientSucc,Succ} = lists:foldl( @@ -98,7 +103,7 @@ do_tracer(Clients,PI,Traci) -> [_,H] = string:tokens(atom_to_list(N),"@"), H end, - case catch dbg:tracer(N,port,dbg:trace_port(ip,0)) of + case catch dbg:tracer(N,port,dbg:trace_port(ip,IpPortSpec)) of {ok,N} -> {ok,Port} = dbg:trace_port_control(N,get_listen_port), {ok,T} = dbg:get_tracer(N), @@ -160,6 +165,8 @@ opt([{resume,MSec}|O],{PI,Client,Traci}) -> opt(O,{PI,Client,[{resume, {true, MSec}}|Traci]}); opt([{flush,MSec}|O],{PI,Client,Traci}) -> opt(O,{PI,Client,[{flush, MSec}|Traci]}); +opt([{queue_size,QueueSize}|O],{PI,Client,Traci}) -> + opt(O,{PI,Client,[{queue_size,QueueSize}|Traci]}); opt([],Opt) -> ensure_opt(Opt). diff --git a/lib/runtime_tools/doc/src/dbg.xml b/lib/runtime_tools/doc/src/dbg.xml index db04bfdf7b..95f74d4607 100644 --- a/lib/runtime_tools/doc/src/dbg.xml +++ b/lib/runtime_tools/doc/src/dbg.xml @@ -954,7 +954,7 @@ Error: fun containing local erlang function calls ('is_atomm' called in guard)\ as the tuple <c>{drop, N}</c> where <c>N</c> is the number of consecutive messages dropped. In case of heavy tracing, drop's are likely to occur, and they surely occur if no client is reading the trace - messages.</p> + messages. The default value of <c>QueSize</c> is 200.</p> </desc> </func> <func> diff --git a/lib/runtime_tools/src/dbg.erl b/lib/runtime_tools/src/dbg.erl index c0d4665bda..f17aa528ed 100644 --- a/lib/runtime_tools/src/dbg.erl +++ b/lib/runtime_tools/src/dbg.erl @@ -427,7 +427,7 @@ trace_port(file, Filename) -> trace_port1(file, Filename, nowrap); trace_port(ip, Portno) when is_integer(Portno) -> - trace_port(ip,{Portno,50}); + trace_port(ip,{Portno,200}); trace_port(ip, {Portno, Qsiz}) when is_integer(Portno), is_integer(Qsiz) -> fun() -> |