Re: DProf on Mac OS X

[Ged Haywood]

Hi there,

On Fri, 25 Jul 2003, John Siracusa wrote:

 Has anyone gotten this to work on OS X?
  [snip]
 I've used this profiling technique on other Unix-like OSes, so I think 
 I'm doing it right.

I'm sure you're 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)

I've never tried it on OS X, but I had exactly the same problem when
Perl 5.6 first came out.  I didn't investigate further since the Perl
development team were rather unhelpful about it.  And about quite a
lot of other things.  With hindsight that might be understandable,
they must have been taking a lot of flack about that time.

The problem persisted until I upgraded to 5.7.2.

Any way you can try it on a different OS, or even try a different Perl?
And before Stas jumps on me *again* for saying that I have no evidence
that 5.8.0 is the culprit in this case.  It just smells fishy to me.  :)

73,
Ged.

Re: DProf on Mac OS X

[John Siracusa]

On 7/26/03 2:01 AM, Ged Haywood wrote:
 Any way you can try it on a different OS, or even try a different Perl?
 And before Stas jumps on me *again* for saying that I have no evidence
 that 5.8.0 is the culprit in this case.  It just smells fishy to me.  :)

My next stop is Linux on x86, but I'd really like to get it working on OS X
if possible.

-John

DProf on Mac OS X

[John Siracusa]

Has anyone gotten this to work on OS X?

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