[#62297] Re: [ruby-cvs:52906] nari:r45760 (trunk): * gc.c (gc_after_sweep): suppress unnecessary expanding heap. — Eric Wong <normalperson@...>
nari@ruby-lang.org wrote:
7 messages
2014/05/02
[#62307] Re: [ruby-cvs:52906] nari:r45760 (trunk): * gc.c (gc_after_sweep): suppress unnecessary expanding heap.
— SASADA Koichi <ko1@...>
2014/05/03
(2014/05/03 4:41), Eric Wong wrote:
[#62402] Re: [ruby-cvs:52906] nari:r45760 (trunk): * gc.c (gc_after_sweep): suppress unnecessary expanding heap.
— Eric Wong <normalperson@...>
2014/05/05
SASADA Koichi <ko1@atdot.net> wrote:
[#62523] [ruby-trunk - Feature #9632] [PATCH 0/2] speedup IO#close with linked-list from ccan — ko1@...
Issue #9632 has been updated by Koichi Sasada.
3 messages
2014/05/11
[#62556] doxygen (Re: Re: [ruby-trunk - Feature #9632] [PATCH 0/2] speedup IO#close with linked-list from ccan) — Tanaka Akira <akr@...>
2014-05-11 8:50 GMT+09:00 Eric Wong <normalperson@yhbt.net>:
3 messages
2014/05/13
[#62727] [RFC] vm_method.c (rb_method_entry_make): avoid freed me in m_tbl — Eric Wong <normalperson@...>
rb_unlink_method_entry may cause old_me to be swept before the new
7 messages
2014/05/24
[#63039] Re: [RFC] vm_method.c (rb_method_entry_make): avoid freed me in m_tbl
— SASADA Koichi <ko1@...>
2014/06/10
Hi,
[#63077] Re: [RFC] vm_method.c (rb_method_entry_make): avoid freed me in m_tbl
— Eric Wong <normalperson@...>
2014/06/10
SASADA Koichi <ko1@atdot.net> wrote:
[#63086] Re: [RFC] vm_method.c (rb_method_entry_make): avoid freed me in m_tbl
— SASADA Koichi <ko1@...>
2014/06/11
(2014/06/11 4:47), Eric Wong wrote:
[#63087] Re: [RFC] vm_method.c (rb_method_entry_make): avoid freed me in m_tbl
— Eric Wong <normalperson@...>
2014/06/11
SASADA Koichi <ko1@atdot.net> wrote:
[#62862] [RFC] README.EXT: document rb_gc_register_mark_object — Eric Wong <normalperson@...>
Any comment on officially supporting this as part of the C API?
5 messages
2014/05/30
[ruby-core:62702] [ruby-trunk - Feature #9841] [RFC] use ihash for fstring implementation
From:
normalperson@...
Date:
2014-05-21 02:19:06 UTC
List:
ruby-core #62702
Issue #9841 has been updated by Eric Wong.
normalperson@yhbt.net wrote:
> This results in ~100K[1] memory savings on start up (with RubyGems
> loaded) with no user-visible changes.
Wait, ccan htable is even cheaper in terms of memory usage. It saves
~150K at startup with fstring measured using time(1) on Debian 64-bit
eglibc: http://bogomips.org/ruby.git/patch?id=bddbbfb261b59
----------------------------------------
Feature #9841: [RFC] use ihash for fstring implementation
https://bugs.ruby-lang.org/issues/9841#change-46823
* Author: Eric Wong
* Status: Open
* Priority: Low
* Assignee:
* Category: core
* Target version: current: 2.2.0
----------------------------------------
This results in ~100K[1] memory savings on start up (with RubyGems
loaded) with no user-visible changes.
While this is not the best example of potential ihash-related memory
savings, there is zero-visible impact related to the loss of hash
ordering from this change.
Per-fstring entry overhead is now 24 bytes per-entry on 64-bit,
half of the previous 48 bytes from st_table_entry_t.
[1] as measured by the time(1) command on eglibc 2.13-38+deb7u1
(Debian 7.0 on x86-64)
Related to Feature #9614
(note: I will have limited Internet access until next week,
free to take your time in reviewing and responding)
Also viewable via git:
http://bogomips.org/ruby.git/patch?id=61c27401ed66 (1/2)
http://bogomips.org/ruby.git/patch?id=67f47a356a7f (2/2)
---Files--------------------------------
ihash-fstring-only.mbox (30 Bytes)
ihash-fstring-only.mbox (20.4 KB)
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