From: Eric Wong <normalperson@...>
Date: 2011-06-11T03:08:48+09:00
Subject: [ruby-core:36947] Re: [Ruby 1.9 - Feature #3905] rb_clear_cache_by_class() called often during GC for non-blocking I/O

SASADA Koichi <ko1@atdot.net> wrote:
> (2011/06/10 13:10), Eric Wong wrote:
> >> For (2), ephemeral class seems good.
> > 
> > Your patch for (1) improves (2), too.  However, I think cache miss
> > is already a huge problem because cache-clearing is called during GC.
> 
> My patch reduces "clearing method cache" time.  And because of my patch
> clears all cache entries, method cache misses should be increase (in
> other words, it is not a solution for (2)).

Oh, I thought you meant CPU cache misses.  Method cache miss shouldn't
be a problem at all because the class is GC'ed.

> I will solve this problem with other techniques.
> 
> First of all, can I commit my patch?

Please do (with workaround for overflow).  Thank you!

-- 
Eric Wong