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Id: 72928
Status: new
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Queue: Devel-DProf

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Requestors: perlbug-followup [...] perl.org
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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>
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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


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