p5pRT
commented
19 years ago From wfischer@lanl.gov
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
Migrated from rt.perl.org#36795 (status was 'rejected')
Searchable as RT36795$