From: Eric Wong <normalperson@...>
Date: 2011-05-11T05:04:01+09:00
Subject: [ruby-core:36091] Re: [Ruby 1.9 - Feature #3905]	rb_clear_cache_by_class() called often during GC for non-blocking	I/O

Eric Wong <normalperson@yhbt.net> wrote:
> Motohiro KOSAKI <kosaki.motohiro@gmail.com> wrote:
> > r29673 caused a regression (see [Bug #4289]). Then, I reverted it by r31378.
> > Alternative fixing way is discussed by [Bug #4289] thread.
> 
> I've pushed the ephemeral class patches up to a new branch:
> 
> $ git pull git://bogomips.org/ruby ephemeral-class
> 
>     1) introduce ephemeral class flag for short lived class
>     2) vm_method.c: ephemeral classes do not write/expire cache
>     3) IO::Wait*able-extended singleton classes are ephemeral

Can we get Feature #3905 reopened to track this, please?  I'd like to
get this fixed before 1.9.3 since it was a performance regression from
1.9.1 => 1.9.2.

Thanks!

-- 
Eric Wong