[dmandel@midgard dmandel]# time perl -e '$x=join("",(a..z))x100;  for
(1..100){$x =~ s/(.*?)I/$1/isge;}'

real    0m3.420s
user    0m2.590s
sys     0m0.000s

[dmandel@midgard dmandel]# time perl5.6.1 -e '$x=join("",(a..z))x100;  for
(1..100){$x =~ s/(.*?)I/$1/isge;}'

real    0m0.151s
user    0m0.050s
sys     0m0.000s

[dmandel@midgard dmandel]# time perl -e '$x=join("",(a..z))x100;  for
(1..100){$x =~ s/(.*?)I/$1/isge;}'

real    0m2.584s
user    0m2.580s
sys     0m0.010s

[dmandel@midgard dmandel]# time perl5.6.1 -e '$x=join("",(a..z))x100;  for
(1..100){$x =~ s/(.*?)I/$1/isge;}'

real    0m0.108s
user    0m0.050s
sys     0m0.000s

[dmandel@midgard dmandel]# time perl -e '$x=join("",(a..z))x100;  for
(1..100){$x =~ s/(.*?)I/$1/isge;}'

real    0m2.718s
user    0m2.570s
sys     0m0.010s

[dmandel@midgard dmandel]# time perl5.6.1 -e '$x=join("",(a..z))x100;  for
(1..100){$x =~ s/(.*?)I/$1/isge;}'

real    0m0.047s
user    0m0.050s
sys     0m0.000s

##</code><code>##

[dmandel@midgard dmandel]# perl -V
Summary of my perl5 (revision 5.0 version 8 subversion 2) configuration:
  Platform:
    osname=linux, osvers=2.4.20-28.9, archname=i686-linux-thread-multi
    uname='linux midgard 2.4.20-28.9 #1 thu dec 18 13:45:22 est 2003 i686 i686 i386 gnulinux '
    config_args=''
    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 ='-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm',
    optimize='-O3',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -fno-strict-aliasing -I/usr/local/include -I/usr/include/gdbm'
    ccversion='', gccversion='3.2.2 20030222 (Red Hat Linux 3.2.2-5)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=4, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread -lc
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    libc=/lib/libc-2.3.2.so, so=so, useshrplib=false, libperl=libperl.a
    gnulibc_version='2.3.2'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic'
    cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'


Characteristics of this binary (from libperl):
  Compile-time options: MULTIPLICITY USE_ITHREADS USE_LARGE_FILES PERL_IMPLICIT_CONTEXT
  Built under linux
  Compiled at Jan  8 2004 21:52:16
  @INC:
    /usr/local/lib/perl5/5.8.2/i686-linux-thread-multi
    /usr/local/lib/perl5/5.8.2
    /usr/local/lib/perl5/site_perl/5.8.2/i686-linux-thread-multi
    /usr/local/lib/perl5/site_perl/5.8.2
    /usr/local/lib/perl5/site_perl

##</code><code>##

[dmandel@midgard dmandel]# perl5.6.1 -V
Summary of my perl5 (revision 5.0 version 6 subversion 1) configuration:
  Platform:
    osname=linux, osvers=2.4.21-1.1931.2.393.entsmp, archname=i386-linux
    uname='linux bugs.devel.redhat.com 2.4.21-1.1931.2.393.entsmp #1 smp thu aug 14 14:47:21 edt 2003 i686 unknown '
    config_args='-des -Doptimize=-O2 -march=i386 -mcpu=i686 -Dcc=gcc -Dcf_by=Red Hat, Inc. -Dcccdlflags=-fPIC -Dinstallprefix=/usr -Dprefix=/usr -Darchname=i386-linux -Dvendorprefix=/usr -Dsiteprefix=/usr -Uusethreads -Uuseithreads -Uuselargefiles -Dd_dosuid -Dd_semctl_semun -Di_db -Di_ndbm -Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Dinc_version_list=5.6.0/i386-linux 5.6.0'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
    useperlio=undef d_sfio=undef uselargefiles=undef usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
  Compiler:
    cc='gcc', ccflags ='-fno-strict-aliasing -I/usr/local/include',
    optimize='-O2 -march=i386 -mcpu=i686',
    cppflags='-fno-strict-aliasing -I/usr/local/include'
    ccversion='', gccversion='2.96 20000731 (Red Hat Linux 7.3 2.96-113)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=4
    alignbytes=4, usemymalloc=n, prototype=define
  Linker and Libraries:
    ld='gcc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lnsl -ldl -lm -lc -lcrypt -lutil
    perllibs=-lnsl -ldl -lm -lc -lcrypt -lutil
    libc=/lib/libc-2.2.5.so, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic'
    cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib'


Characteristics of this binary (from libperl):
  Compile-time options:
  Built under linux
  Compiled at Aug 18 2003 16:08:31
  @INC:
    /usr/lib/perl5/5.6.1/i386-linux
    /usr/lib/perl5/5.6.1
    /usr/lib/perl5/site_perl/5.6.1/i386-linux
    /usr/lib/perl5/site_perl/5.6.1
    /usr/lib/perl5/site_perl/5.6.0/i386-linux
    /usr/lib/perl5/site_perl/5.6.0
    /usr/lib/perl5/site_perl
    /usr/lib/perl5/vendor_perl/5.6.1/i386-linux
    /usr/lib/perl5/vendor_perl/5.6.1
    /usr/lib/perl5/vendor_perl