Feature #10081

[PATCH] Specifying MACRO for increase performence in ppc64

Added by Gustavo Frederico Temple Pedrosa about 1 year ago. Updated about 1 year ago.

[ruby-core:63937]
Status:Closed
Priority:Normal
Assignee:-

Description

To increase performance on ppc64 machines, the MACRO "powerpc64" were specified for the architecture, just like for x86_64 machines.

I've executed some benchmarks, see below:

Benchmark               Before (milliseconds)   After (milliseconds)    Percentage difference
bm_vm2_regexp.rb        4955                    4752                    -4,10%
bm_so_meteor_contest.rb 6065                    5817                    -4,09%
bm_app_pentomino.rb     35122                   34886                   -0,67%
bm_hash_flatten.rb      3055                    3011                    -1,44%
bm_so_sieve.rb          1227                    1210                    -1,39%

macro_powerpc64.patch Magnifier (1.16 KB) Gustavo Frederico Temple Pedrosa, 07/22/2014 06:40 PM

Associated revisions

Revision 46915
Added by Nobuyoshi Nakada about 1 year ago

UNALIGNED_WORD_ACCESS on ppc64

  • include/ruby/defines.h, siphash.c, st.c (UNALIGNED_WORD_ACCESS): add PowerPC64 too, which is capable to access unaligned words. patched by Gustavo Frederico Temple Pedrosa in . [Feature #10081]
  • regint.h (PLATFORM_UNALIGNED_WORD_ACCESS): ditto.

Revision 46915
Added by Nobuyoshi Nakada about 1 year ago

UNALIGNED_WORD_ACCESS on ppc64

  • include/ruby/defines.h, siphash.c, st.c (UNALIGNED_WORD_ACCESS): add PowerPC64 too, which is capable to access unaligned words. patched by Gustavo Frederico Temple Pedrosa in . [Feature #10081]
  • regint.h (PLATFORM_UNALIGNED_WORD_ACCESS): ditto.

History

#1 Updated by Nobuyoshi Nakada about 1 year ago

PowerPC64 can unaligned access?

#2 Updated by Gustavo Frederico Temple Pedrosa about 1 year ago

Nobuyoshi Nakada wrote:

PowerPC64 can unaligned access?

Yes, I have tested in my IBM POWER 7+ (rev 2.1)

#3 Updated by Nobuyoshi Nakada about 1 year ago

Thank you.
Possibly, can PACKED_STRUCT_UNALIGNED also work on PowerPC64?

#4 Updated by Nobuyoshi Nakada about 1 year ago

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

Applied in changeset r46915.


UNALIGNED_WORD_ACCESS on ppc64

  • include/ruby/defines.h, siphash.c, st.c (UNALIGNED_WORD_ACCESS): add PowerPC64 too, which is capable to access unaligned words. patched by Gustavo Frederico Temple Pedrosa in . [Feature #10081]
  • regint.h (PLATFORM_UNALIGNED_WORD_ACCESS): ditto.

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