Bug #8930: some benchmark programs are slow since r42822

• Status: Closed
• Assignee: -
• Target version: 2.1.0
• ruby -v: ruby 2.1.0dev (2013-09-04 trunk r42822) [x86_64-linux]
• Backport: 1.9.3: UNKNOWN, 2.0.0: UNKNOWN

[authorNari (Narihiro Nakamura)]

Hi.

I find some benchmark programs are slow since r42822.

% time ./miniruby -v benchmark/bm_vm3_clearmethodcache.rb
ruby 2.1.0dev (2013-09-04 trunk 42910) [x86_64-linux]
./miniruby -v benchmark/bm_vm3_clearmethodcache.rb 0.42s user 0.00s system 98% cpu 0.451 total

% time ./miniruby -v benchmark/bm_vm3_clearmethodcache.rb
ruby 2.1.0dev (2013-09-04 trunk r42822) [x86_64-linux]
./miniruby -v benchmark/bm_vm3_clearmethodcache.rb 0.48s user 0.01s system 98% cpu 0.495 total

In addition to the above:

• vm2_poly_method
• vm2_send
• so_object
• etc... (If you want to know all slow benchmark programs, please check this site http://www.narihiro.info/crubybenci/)

If this isn't intended, could you check it, charliesome or ko1?

Thanks

• Status changed from Open to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r43027.
Narihiro, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

• class.c (class_alloc): remove mc_tbl

• gc.c (obj_free): ditto

• internal.h (struct rb_classext_struct): ditto

• method.h (rb_method_entry): remove ent param

• vm_method.c: restore the global method cache. Per class cache tables
  turned out to be far too slow.

  [ruby-core:57289] [Bug #8930]