| CC: | bug-Devel-DProf [...] rt.cpan.org, perl5-porters [...] perl.org |
| Subject: | [perl #36795] Dprof/dprofpp reports incorrect subroutine call count if #Calls > 999999 |
| Date: | Sat, 03 Dec 2011 22:43:42 -0800 |
| To: | "OtherRecipients of perl Ticket #36795":; |
| From: | "Father Chrysostomos via RT" <perlbug-followup [...] perl.org> |
Forwarding to the CPAN queue....
On Wed Aug 03 13:36:01 2005, wfischer@lanl.gov wrote:
Show quoted text
> This is a bug report for perl from wfischer@lanl.gov,
> generated with the help of perlbug 1.34 running under perl v5.8.1.
>
>
> -----------------------------------------------------------------
> Dprof/dprofpp reports incorrect subroutine call count if calls > 999999
> (possibly the problem is in dprofpp)
>
> In this version of Dprof/dprofpp, the #Calls field is apparently
> limited to
> 6 characters: values >= 10**6 are truncated (keeping the left-most 6
> digits only).
>
> For example, the following one-liner calls a no-op subroutine 1,234,567
> times,
> but only 123,456 calls are reported:
>
> % perl -d:Dprof -e 'sub just_call_it { return } for (1..1234567) {
> just_call_it() }'
> % dprofpp
> Total Elapsed Time = 6.433940 Seconds
> User+System Time = 0 Seconds
> Exclusive Times
> %Time ExclSec CumulS #Calls sec/call Csec/c Name
> 0.00 - -1.133 123456 - - main::just_call_it
>
> I was going crazy trying to figure why my subroutine was slowing down
> for different data set,
> when in fact there were simply more calls to it
>
> -----------------------------------------------------------------
> ---
> Flags:
> category=utilities
> severity=medium
> ---
> Site configuration information for perl v5.8.1:
>
> Configured by root at Fri Sep 12 19:46:46 PDT 2003.
>
> Summary of my perl5 (revision 5.0 version 8 subversion 1 RC3)
> configuration:
> Platform:
> osname=darwin, osvers=7.0, archname=darwin-thread-multi-2level
> uname='darwin hampsten 7.0 darwin kernel version 6.0: fri jul 25
> 16:58:41 pdt 2003;
> root:xnu-344.frankd.rootsxnu-344.frankd~objrelease_ppc power macintosh
> powerpc '
> config_args='-ds -e -Dprefix=/usr -Dccflags=-g -pipe
> -Dldflags=-Dman3ext=3pm -Duseithreads -Duseshrplib'
> hint=recommended, useposix=true, d_sigaction=define
> usethreads=define use5005threads=undef useithreads=define
> usemultiplicity=define
> useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
> use64bitint=undef use64bitall=undef uselongdouble=undef
> usemymalloc=n, bincompat5005=undef
> Compiler:
> cc='cc', ccflags ='-g -pipe -pipe -fno-common -DPERL_DARWIN
> -no-cpp-precomp -fno-strict-aliasing -I/usr/local/include',
> optimize='-Os',
> cppflags='-no-cpp-precomp -g -pipe -pipe -fno-common -DPERL_DARWIN
> -no-cpp-precomp -fno-strict-aliasing -I/usr/local/include'
> ccversion='', gccversion='3.3 20030304 (Apple Computer, Inc. build
> 1495)', 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='MACOSX_DEPLOYMENT_TARGET=10.3 cc', ldflags ='-L/usr/local/lib'
> libpth=/usr/local/lib /usr/lib
> libs=-ldbm -ldl -lm -lc
> perllibs=-ldl -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='-bundle -undefined dynamic_lookup
> -L/usr/local/lib'
>
> Locally applied patches:
> RC3
>
> ---
> @INC for perl v5.8.1:
> /System/Library/Perl/5.8.1/darwin-thread-multi-2level
> /System/Library/Perl/5.8.1
> /Library/Perl/5.8.1/darwin-thread-multi-2level
> /Library/Perl/5.8.1
> /Library/Perl
> /Network/Library/Perl/5.8.1/darwin-thread-multi-2level
> /Network/Library/Perl/5.8.1
> /Network/Library/Perl
> .
>
> ---
> Environment for perl v5.8.1:
> DYLD_LIBRARY_PATH (unset)
> HOME=/Users/wfischer
> LANG (unset)
> LANGUAGE (unset)
> LD_LIBRARY_PATH (unset)
> LOGDIR (unset)
>
> PATH=/bin:/sbin:/usr/bin:/usr/sbin:/sw/bin:/Users/wfischer/scripts:/
> Users/wfischer/bin:/Developer/Tools:/usr/local/bin:/Volumes/t10-samba1/
> scripts:/Volumes/T10-NET;FLY/scripts:/System/Library/Frameworks/
> Python.framework/Versions/2.3/bin:.:/sw/bin:/Users/wfischer/scripts:/
> Users/wfischer/bin:/Developer/Tools:/usr/local/bin:/Volumes/t10-samba1/
> scripts:/Volumes/T10-NET;FLY/scripts:/System/Library/Frameworks/
> Python.framework/Versions/2.3/bin:.:/sw/bin:/Users/wfischer/scripts:/
> Users/wfischer/bin:/Developer/Tools:/usr/local/bin:/Volumes/t10-samba1/
> scripts:/Volumes/T10-NET;FLY/scripts:/System/Library/Frameworks/
> Python.framework/Versions/2.3/bin:.
> PERL_BADLANG (unset)
> SHELL=/bin/bash
>
--
Father Chrysostomos