From: Eric Wong <normalperson@...>
Date: 2017-07-24T20:28:45+00:00
Subject: [ruby-core:82152] Re: [Ruby trunk Bug#13167] Dir.glob is 25x slower since Ruby 2.2

pdahorek@seznam.cz wrote:
> Bug #13167: Dir.glob is 25x slower since Ruby 2.2
> https://bugs.ruby-lang.org/issues/13167#change-65905

I didn't see a difference in Linux between 2.1 and trunk;
but this seems wrong on Linux and could be optimized:

$ strace -c -e getdents ruby --disable=gems -e 'Dir.glob("*/*.{flac}")'
=> 935 getdents calls

$ strace -c -e getdents ruby --disable=gems -e 'Dir.glob("*/*.{flac,ogg}")'
=> 1870 getdents calls

$ strace -c -e getdents ruby --disable=gems -e 'Dir.glob("*/*.{flac,ogg,mp3}")'
=> 2805 getdents calls

Investigating...

Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>