This is the output from class-std.pl run on a IBM Thinkpad T42 equipped with a 1.7GHz Pentium Mobile (Dothan). The machine has 1 GB of memory, which was more than sufficient for running the benchmark. The Benchmark was run from inside Eclipse from a Gnome desktop. OS was Ubuntu 7.10 (Gutsy Gibbon). Class-Std-Fast is SVN revision 195 (trunk). Summary of my perl5 (revision 5 version 8 subversion 8) configuration: Platform: osname=linux, osvers=2.6.15.7, archname=i486-linux-gnu-thread-multi uname='linux palmer 2.6.15.7 #1 smp thu sep 7 19:42:20 utc 2006 i686 gnulinux ' config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN -Dcccdlflags=-fPIC -Darchname=i486-linux-gnu -Dprefix=/usr -Dprivlib=/usr/share/perl/5.8 -Darchlib=/usr/lib/perl/5.8 -Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5 -Dvendorarch=/usr/lib/perl5 -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl/5.8.8 -Dsitearch=/usr/local/lib/perl/5.8.8 -Dman1dir=/usr/share/man/man1 -Dman3dir=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1 -Dsiteman3dir=/usr/local/man/man3 -Dman1ext=1 -Dman3ext=3perl -Dpager=/usr/bin/sensible-pager -Uafs -Ud_csh -Uusesfio -Uusenm -Duseshrplib -Dlibperl=libperl.so.5.8.8 -Dd_dosuid -des' 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 -DDEBIAN -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64', optimize='-O2', cppflags='-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -DDEBIAN -fno-strict-aliasing -pipe -I/usr/local/include' ccversion='', gccversion='4.1.3 20070831 (prerelease) (Ubuntu 4.1.2-16ubuntu1)', 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=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt perllibs=-ldl -lm -lpthread -lc -lcrypt libc=/lib/libc-2.6.1.so, so=so, useshrplib=true, libperl=libperl.so.5.8.8 gnulibc_version='2.6.1' Dynamic Linking: dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E' cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib' Characteristics of this binary (from libperl): Compile-time options: MULTIPLICITY PERL_IMPLICIT_CONTEXT PERL_MALLOC_WRAP THREADS_HAVE_PIDS USE_ITHREADS USE_LARGE_FILES USE_PERLIO USE_REENTRANT_API Built under linux Compiled at Sep 29 2007 05:57:38 @INC: /etc/perl /usr/local/lib/perl/5.8.8 /usr/local/share/perl/5.8.8 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.8 /usr/share/perl/5.8 /usr/local/lib/site_perl . Info: Each test creates an object an stacks two objects into it (two levels) MyBenchTestFastCache (50000 iterations - first run) timethis 50000: 1 wallclock secs ( 0.91 usr + 0.02 sys = 0.93 CPU) @ 53763.44/s (n=50000) Cleanup: Destroying 150000 objects timethis 1: 2 wallclock secs ( 1.58 usr + 0.01 sys = 1.59 CPU) @ 0.63/s (n=1) (warning: too few iterations for a reliable count) MyBenchTestFastCache (50000 iterations - second run) timethis 50000: 0 wallclock secs ( 0.45 usr + 0.00 sys = 0.45 CPU) @ 111111.11/s (n=50000) Cleanup: Destroying 150000 objects timethis 1: 2 wallclock secs ( 1.54 usr + 0.01 sys = 1.55 CPU) @ 0.65/s (n=1) (warning: too few iterations for a reliable count) MyBenchTestFastBasic (50000 iterations - first run) timethis 50000: 1 wallclock secs ( 0.57 usr + 0.01 sys = 0.58 CPU) @ 86206.90/s (n=50000) Cleanup: Destroying 150000 objects timethis 1: 1 wallclock secs ( 1.39 usr + 0.00 sys = 1.39 CPU) @ 0.72/s (n=1) (warning: too few iterations for a reliable count) MyBenchTestFastBasic (50000 iterations - second run) timethis 50000: 1 wallclock secs ( 0.55 usr + 0.00 sys = 0.55 CPU) @ 90909.09/s (n=50000) Cleanup: Destroying 150000 objects timethis 1: 1 wallclock secs ( 1.38 usr + 0.01 sys = 1.39 CPU) @ 0.72/s (n=1) (warning: too few iterations for a reliable count) MyBenchTestFast (50000 iterations - first run) timethis 50000: 14 wallclock secs (13.10 usr + 0.08 sys = 13.18 CPU) @ 3793.63/s (n=50000) Cleanup: Destroying 150000 objects timethis 1: 1 wallclock secs ( 1.51 usr + 0.03 sys = 1.54 CPU) @ 0.65/s (n=1) (warning: too few iterations for a reliable count) MyBenchTestFast (50000 iterations - second run) timethis 50000: 14 wallclock secs (12.93 usr + 0.08 sys = 13.01 CPU) @ 3843.20/s (n=50000) Cleanup: Destroying 150000 objects timethis 1: 1 wallclock secs ( 1.52 usr + 0.00 sys = 1.52 CPU) @ 0.66/s (n=1) (warning: too few iterations for a reliable count) MyBenchTest (50000 iterations - first run) timethis 50000: 14 wallclock secs (13.48 usr + 0.08 sys = 13.56 CPU) @ 3687.32/s (n=50000) Cleanup: Destroying 150000 objects timethis 1: 2 wallclock secs ( 1.71 usr + 0.02 sys = 1.73 CPU) @ 0.58/s (n=1) (warning: too few iterations for a reliable count) MyBenchTest (50000 iterations - second run) timethis 50000: 14 wallclock secs (13.27 usr + 0.09 sys = 13.36 CPU) @ 3742.51/s (n=50000) Cleanup: Destroying 150000 objects timethis 1: 2 wallclock secs ( 1.71 usr + 0.02 sys = 1.73 CPU) @ 0.58/s (n=1) (warning: too few iterations for a reliable count)