[#63592] [ruby-trunk - Bug #10009] IO operation is 10x slower in multi-thread environment — normalperson@...
Issue #10009 has been updated by Eric Wong.
3 messages
2014/07/08
[#63682] [ruby-trunk - Feature #10030] [PATCH] reduce rb_iseq_struct to 296 bytes — ko1@...
Issue #10030 has been updated by Koichi Sasada.
3 messages
2014/07/13
[#63703] [ruby-trunk - Feature #10030] [PATCH] reduce rb_iseq_struct to 296 bytes — ko1@...
Issue #10030 has been updated by Koichi Sasada.
3 messages
2014/07/14
[#63743] [ruby-trunk - Bug #10037] Since r46798 on Solaris, "[BUG] rb_vm_get_cref: unreachable" during make — ngotogenome@...
Issue #10037 has been updated by Naohisa Goto.
3 messages
2014/07/15
[#64136] Ruby 2.1.2 (and 2.1.1 and probably others) assumes a libffi with 3 version numbers in extconf.rb — "Jeffrey 'jf' Lim" <jfs.world@...>
As per subject.
4 messages
2014/07/31
[#64138] Re: Ruby 2.1.2 (and 2.1.1 and probably others) assumes a libffi with 3 version numbers in extconf.rb
— "Jeffrey 'jf' Lim" <jfs.world@...>
2014/07/31
On Thu, Jul 31, 2014 at 6:03 PM, Jeffrey 'jf' Lim <[email protected]>
[ruby-core:63994] [ruby-trunk - Bug #9952] [Assigned] Optimize object allocations in CSV::Row
From:
nagachika00@...
Date:
2014-07-24 11:33:34 UTC
List:
ruby-core #63994
Issue #9952 has been updated by Tomoyuki Chikanaga. Status changed from Open to Assigned ---------------------------------------- Bug #9952: Optimize object allocations in CSV::Row https://bugs.ruby-lang.org/issues/9952#change-48010 * Author: Andrew Vit * Status: Assigned * Priority: Normal * Assignee: James Gray * Category: lib * Target version: * ruby -v: ruby 2.1.2p95 (2014-05-08 revision 45877) [x86_64-linux] * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN ---------------------------------------- I'm seeing a large number of unnecessary array allocations where CSV zips headers & field values together for each row. 1. We can reverse the zipped arrays in-place instead of re-allocating dup arrays. 2. We can completely skip the reverse-zip remapping iteration when the number of headers and fields match (probably the common case). This tiny patch should eliminate one extra temporary array object for every table cell, and saves some unnecessary looping. ---Files-------------------------------- csv-20140618.patch (497 Bytes) -- https://bugs.ruby-lang.org/