Here are my results (amd64-freebsd 6.2, perl5.8.8 from ports, perl5.10.0 self-compiled): 
$ perl5.8.8 ~/trash/test.pl
Benchmark: running set_inherited_class, set_inherited_object for at le
+ast 3 CPU seconds...
set_inherited_class:  5 wallclock secs ( 3.14 usr +  0.00 sys =  3.14 
+CPU) @ 403854.65/s (n=1268356)
set_inherited_object:  4 wallclock secs ( 3.16 usr +  0.01 sys =  3.17
+ CPU) @ 441967.29/s (n=1401865)


$ /usr/local/src/perl-5.10.0-sysmalloc/perl -I/usr/local/src/perl-5.10
+.0-sysmalloc/lib ~/trash/test.pl 
Benchmark: running set_inherited_class, set_inherited_object for at le
+ast 3 CPU seconds...
set_inherited_class:  4 wallclock secs ( 3.15 usr +  0.01 sys =  3.16 
+CPU) @ 309119.05/s (n=975657)
set_inherited_object:  5 wallclock secs ( 3.08 usr +  0.00 sys =  3.08
+ CPU) @ 402004.47/s (n=1237420)

$/usr/local/src/perl-5.10.0-perlmalloc/perl -I/usr/local/src/perl-5.10
+.0-perlmalloc/lib ~/trash/test.pl 
Benchmark: running set_inherited_class, set_inherited_object for at le
+ast 3 CPU seconds...
set_inherited_class:  6 wallclock secs ( 3.12 usr +  0.00 sys =  3.12 
+CPU) @ 378921.38/s (n=1181169)
set_inherited_object:  6 wallclock secs ( 3.15 usr +  0.00 sys =  3.15
+ CPU) @ 469993.13/s (n=1479744)

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perl with sysmalloc seems to be the worst, while the both perls with perlmalloc have similar results.

In reply to Re: 5:10: Why is this slower than 5.8.8? by eserte
in thread 5:10: Why is this slower than 5.8.8? by jk2addict

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