From http://perl.apache.org/docs/1.0/guide/performance.html
% setenv PERL5OPT -d:DProf % httpd -X -d `pwd` & ... make some requests to the server here ... % kill `cat logs/httpd.pid` % unsetenv PERL5OPT % dprofpp
I've used this profiling technique on other Unix-like OSes, so I think I'm doing it right. But on OS X, I get a tiny tmon.out file that never grows after the initial server startup. I don't see any error messages or log lines.
When I try to use Apache::DProf, I get a bus error on any request:
[Fri Jul 25 18:52:48 2003] [notice] child pid 3840 exit signal Bus error (10)
My setup:
apache 1.3.27, mod_perl 1.27
% uname -a
Darwin derkins 6.6 Darwin Kernel Version 6.6: Thu May 1 21:48:54 PDT 2003; root:xnu/xnu-344.34.obj~1/RELEASE_PPC Power Macintosh powerpc
% perl -V
Summary of my perl5 (revision 5.0 version 8 subversion 0) configuration:
Platform:
osname=darwin, osvers=6.0, archname=darwin
uname='darwin derkins 6.0 darwin kernel version 6.0: sat jul 27 13:18:52 pdt 2002; root:xnuxnu-344.obj~1release_ppc power macintosh powerpc '
config_args=''
hint=recommended, useposix=true, d_sigaction=define
usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
use64bitint=undef use64bitall=undef uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='cc', ccflags ='-pipe -fno-common -no-cpp-precomp -fno-strict-aliasing',
optimize='-O3',
cppflags='-no-cpp-precomp -pipe -fno-common -no-cpp-precomp -fno-strict-aliasing'
ccversion='', gccversion='3.1 20020420 (prerelease)', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=4321
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=8
ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
alignbytes=8, prototype=define
Linker and Libraries:
ld='cc', ldflags =' -flat_namespace -L/usr/local/lib'
libpth=/usr/local/lib /usr/lib
libs=-lgdbm -ldbm -lm -lc
perllibs=-lm -lc
libc=/usr/lib/libc.dylib, so=dylib, useshrplib=true, libperl=libperl.dylib
gnulibc_version=''
Dynamic Linking:
dlsrc=dl_dyld.xs, dlext=bundle, d_dlsymun=undef, ccdlflags=' '
cccdlflags=' ', lddlflags=' -flat_namespace -bundle -undefined suppress -L/usr/local/lib'
Characteristics of this binary (from libperl): Compile-time options: USE_LARGE_FILES Built under darwin Compiled at Aug 24 2002 14:44:56 %ENV: PERL5DB="use Devel::DProf" PERL5OPT="-d:DProf" PERL_READLINE_NOWARN="" @INC: /Library/Perl/darwin /Library/Perl /Library/Perl/darwin /Library/Perl /Library/Perl
