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<chapter id="installation">

<title><![%standalone-include[<productname>PostgreSQL</>]]>

<indexterm>

<primary>DTrace</primary>

</indexterm>

Compiles with support for the dynamic tracing tool DTrace.

Operating system support for DTrace is currently available in

Solaris and Mac OS X Leopard.

Compiles <productname>PostgreSQL</productname> with support for the

dynamic tracing tool DTrace.

<![%standalone-ignore[See <xref linkend="dynamic-trace">

for more information.]]>

</para>

<para>

To point to the <command>dtrace</command> program, the

environment variable <envar>DTRACE</envar> can be set. This

will often be necessary because <command>dtrace</command> is

typically installed under <filename>/usr/sbin</filename>,

which might not be in the path. Additional command-line

options for the <command>dtrace</command> program can be

specified in the environment variable

<envar>DTRACEFLAGS</envar>.

which might not be in the path.

</para>

<para>

To include DTrace support in a 64-bit binary, specify

Extra command-line options for the <command>dtrace</command> program

can be specified in the environment variable

<envar>DTRACEFLAGS</envar>. On Solaris,

to include DTrace support in a 64-bit binary, you must specify

<literal>DTRACEFLAGS="-64"</> to configure. For example,

using the GCC compiler:

<screen>

./configure CC='gcc -m64' --enable-dtrace DTRACEFLAGS='-64' ...

</screen>

</screen>

Using Sun's compiler:

<screen>

<screen>

./configure CC='/opt/SUNWspro/bin/cc -xtarget=native64' --enable-dtrace DTRACEFLAGS='-64' ...

</screen>

</para>

<para>

Yes, using DTrace is possible. See <![%standalone-include[the

documentation]]>

<![%standalone-ignore[<xref linkend="monitoring">]]> for further

<![%standalone-ignore[<xref linkend="dynamic-trace">]]> for further

information. You can also find more information in this

article: <ulink url="http://blogs.sun.com/robertlor/entry/user_level_dtrace_probes_in"></ulink>.

</para>