Simon Riggs napsal(a):
On Sat, 2006-12-02 at 09:43 +0100, Peter Eisentraut wrote:
Simon Riggs wrote:
Enclose new trace.sgml file as discussed on -docs.
I have a question here, regarding this:
To include DTrace support in a 64-bit binary, specify --enable-dtrace
and DTRACEFLAGS="-64" to configure.
The dtrace documentation says that dtrace automatically picks the right
build environment. Something is wrong here. Either the dtrace
documentation or ours.
I didn't presume to question Robert's technical notes
http://blogs.sun.com/robertlor/entry/user_level_dtrace_probes_in
Robert, Can you throw any light on this? Or do you have any further
comments on the docs?
http://developer.postgresql.org/pgdocs/postgres/dynamic-trace.html
I'm not dtrace guru, but I think that main reason for 64-bit flag is
that dtrace generates header file/code for probes during preprocessing
time and it don't know nothing about compiler switch. The probe code/
data structure is different on 32/64-bit.
However, if you run dtrace script that dtrace detects automatically
"build environment" (if binary is 32 or 64bits).
Robert, please correct me if I wrong.
Zdenek
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