From: normalperson@...
Date: 2014-01-22T20:53:25+00:00
Subject: [ruby-core:59993] [ruby-trunk - Feature #9441] [Open] [PATCH] method.h: save 8 bytes in rb_method_definition_t on x86-64

Issue #9441 has been reported by Eric Wong.

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Feature #9441: [PATCH] method.h: save 8 bytes in rb_method_definition_t on x86-64
https://bugs.ruby-lang.org/issues/9441

* Author: Eric Wong
* Status: Open
* Priority: Normal
* Assignee: 
* Category: core
* Target version: current: 2.2.0
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Rearranging the struct to have two 32-bit values next to each other
allows the struct to be one word smaller on 64-bit.

This lowers overall memory use as we have many methods out-of-the box:

$ /usr/bin/time ./ruby -e exit
0.06user 0.00system 0:00.07elapsed 98%CPU (0avgtext+0avgdata 7420maxresident)k
0inputs+0outputs (0major+1930minor)pagefaults 0swaps
$ /usr/bin/time ./ruby -e exit
0.06user 0.00system 0:00.07elapsed 98%CPU (0avgtext+0avgdata 7372maxresident)k
0inputs+0outputs (0major+1918minor)pagefaults 0swaps

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The following changes since commit 06d2e8aaf7fe60a09245963f2f69feb5685db8f0:

  thread/thread.c: no dup (2014-01-22 06:59:41 +0000)

are available in the git repository at:

  git://80x24.org/ruby.git mdefsize

for you to fetch changes up to 3fcf1bf57d99482e9882fc8d5b3348da799c41c5:

  method.h: save 8 bytes in rb_method_definition_t on x86-64 (2014-01-22 20:41:17 +0000)

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Eric Wong (1):
      method.h: save 8 bytes in rb_method_definition_t on x86-64

 method.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


---Files--------------------------------
0001-method.h-save-8-bytes-in-rb_method_definition_t-on-x.patch (1.36 KB)


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