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authorSimon Marlow <marlowsd@gmail.com>2008-10-01 16:32:22 +0000
committerSimon Marlow <marlowsd@gmail.com>2008-10-01 16:32:22 +0000
commit2493950abe7896a4e6b1f916d7122c096f5fb852 (patch)
tree6b9c0147c6c760ee97e7a166e89d81aa68fd48df
parent02c95962cc1d06eb9cbd756369b872eccdd9122d (diff)
downloadhaskell-2493950abe7896a4e6b1f916d7122c096f5fb852.tar.gz
Document +RTS -hT
We forgot to document this in GHC 6.8
-rw-r--r--docs/users_guide/runtime_control.xml38
1 files changed, 35 insertions, 3 deletions
diff --git a/docs/users_guide/runtime_control.xml b/docs/users_guide/runtime_control.xml
index 7cfc655236..0582423564 100644
--- a/docs/users_guide/runtime_control.xml
+++ b/docs/users_guide/runtime_control.xml
@@ -682,14 +682,46 @@
</sect2>
<sect2>
- <title>RTS options for profiling and parallelism</title>
+ <title>RTS options for concurrency and parallelism</title>
- <para>The RTS options related to profiling are described in <xref
- linkend="rts-options-heap-prof"/>, those for concurrency in
+ <para>The RTS options related to concurrency are described in
<xref linkend="using-concurrent" />, and those for parallelism in
<xref linkend="parallel-options"/>.</para>
</sect2>
+ <sect2>
+ <title>RTS options for profiling</title>
+
+ <para>Most profiling runtime options are only available when you
+ compile your program for profiling (see
+ <xref linkend="prof-compiler-options" />, and
+ <xref linkend="rts-options-heap-prof" /> for the runtime options).
+ However, there is one profiling option that is available
+ for ordinary non-profiled executables:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term>
+ <option>-hT</option>
+ <indexterm><primary><option>-hT</option></primary><secondary>RTS
+ option</secondary></indexterm>
+ </term>
+ <listitem>
+ <para>Generates a basic heap profile, in the
+ file <literal><replaceable>prog</replaceable>.hp</literal>.
+ To produce the heap profile graph,
+ use <command>hp2ps</command> (see <xref linkend="hp2ps"
+ />). The basic heap profile is broken down by data
+ constructor, with other types of closures (functions, thunks,
+ etc.) grouped into broad categories
+ (e.g. <literal>FUN</literal>, <literal>THUNK</literal>). To
+ get a more detailed profile, use the full profiling
+ support (<xref linkend="profiling" />).</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </sect2>
+
<sect2 id="rts-options-debugging">
<title>RTS options for hackers, debuggers, and over-interested
souls</title>