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| author | Siri Hansen <[email protected]> | 2016-09-14 18:19:16 +0200 |
|---|---|---|
| committer | Siri Hansen <[email protected]> | 2016-09-23 15:14:46 +0200 |
| commit | ac1a648ff518e0aa92cb14773b617829081a75d0 (patch) | |
| tree | 652667867a508c3b352beb98c1a3272fb55350a4 /lib/observer/doc/src | |
| parent | 3f3f25b23379b1afb15cc97462cf5d385690f5a0 (diff) | |
| download | otp-ac1a648ff518e0aa92cb14773b617829081a75d0.tar.gz otp-ac1a648ff518e0aa92cb14773b617829081a75d0.tar.bz2 otp-ac1a648ff518e0aa92cb14773b617829081a75d0.zip | |
[ttb] Add option <c>queue_size</c> to tracer/2
This sets the maximum queue size for the IP trace driver which is used
when tracing to shell and/or <c>{local,File}</c>.
Also, change the default queue size set by dbg:trace_port/2 to 200.
Diffstat (limited to 'lib/observer/doc/src')
| -rw-r--r-- | lib/observer/doc/src/ttb.xml | 16 |
1 files changed, 15 insertions, 1 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 |