From: "Юрий Соколов" <funny.falcon@...>
Date: 2013-04-04T16:44:05+09:00
Subject: [ruby-core:53988] Re: [ruby-trunk - Bug #8211] Performance regression of method calls

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Is your platform 32bit? Than it is cause of -fPIE


2013/4/4 bitsweat (Jeremy Kemper) <jeremy@bitsweat.net>

>
> Issue #8211 has been updated by bitsweat (Jeremy Kemper).
>
>
> David, this looks a lot like the CFLAGS issues folks were hitting with
> rvm. Essentially, getting unoptimized Ruby builds.
>
> Take a close look at the differences in RbConfig::CONFIG between your Ruby
> builds.
>
> ruby -e 'puts RUBY_DESCRIPTION, RbConfig::CONFIG["cflags"],
> RbConfig::CONFIG["CFLAGS"]'
>
> How did you build Ruby?
> ----------------------------------------
> Bug #8211: Performance regression of method calls
> https://bugs.ruby-lang.org/issues/8211#change-38202
>
> Author: dunric (David Unric)
> Status: Open
> Priority: Normal
> Assignee:
> Category: core
> Target version:
> ruby -v: 2.0.0p0
>
>
> There are significant performance regressions in the newer Ruby versions.
> When compared to the last 1.9 patch build, method & lambda calls are about
> 3 times slower !
>
> Benchmarking results:
> _____________________________________________________________
> Ruby 1.9.3p392
>        user     system      total        real
> lambda:  8.310000   0.000000   8.310000 (  8.315247)
> instance method:  5.210000   0.000000   5.210000 (  5.219299)
> class method:  5.040000   0.000000   5.040000 (  5.037483)
>
> Ruby 2.0.0-p0
>        user     system      total        real
> lambda: 25.310000   0.010000  25.320000 ( 25.339897)
> instance method: 17.870000   0.000000  17.870000 ( 17.882656)
> class method: 17.630000   0.010000  17.640000 ( 17.650515)
>
> Ruby 2.1.0-dev
>        user     system      total        real
> lambda: 19.210000   0.000000  19.210000 ( 19.227314)
> instance method: 13.930000   0.000000  13.930000 ( 13.936974)
> class method: 14.000000   0.000000  14.000000 ( 14.001582)
> _____________________________________________________________
>
>
> The code:
> _____________________________________________________________
> require 'benchmark'
>
> do_custom_stuff = lambda { 1 + 1 + 1 }
>
> class CustomStuff
>   def self.do
>     1 + 1 + 1
>   end
>
>   def do
>     1 + 1 + 1
>   end
> end
>
> custom_stuff = CustomStuff.new
>
> Benchmark.bm { |b|
>    MANY = 50_000_000
>    b.report("lambda:")          { MANY.times { do_custom_stuff.call }}
>    b.report("instance method:") { MANY.times { custom_stuff.do      }}
>    b.report("class method:")    { MANY.times { CustomStuff.do       }}
> }
> _____________________________________________________________
>
>
> --
> http://bugs.ruby-lang.org/
>
>

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<div dir=3D"ltr">Is your platform 32bit? Than it is cause of -fPIE</div><di=
v class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">2013/4/4 bitswea=
t (Jeremy Kemper) <span dir=3D"ltr">&lt;<a href=3D"mailto:jeremy@bitsweat.n=
et" target=3D"_blank">jeremy@bitsweat.net</a>&gt;</span><br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><br>
Issue #8211 has been updated by bitsweat (Jeremy Kemper).<br>
<br>
<br>
David, this looks a lot like the CFLAGS issues folks were hitting with rvm.=
 Essentially, getting unoptimized Ruby builds.<br>
<br>
Take a close look at the differences in RbConfig::CONFIG between your Ruby =
builds.<br>
<br>
ruby -e &#39;puts RUBY_DESCRIPTION, RbConfig::CONFIG[&quot;cflags&quot;], R=
bConfig::CONFIG[&quot;CFLAGS&quot;]&#39;<br>
<br>
How did you build Ruby?<br>
<div class=3D"im">----------------------------------------<br>
Bug #8211: Performance regression of method calls<br>
</div><a href=3D"https://bugs.ruby-lang.org/issues/8211#change-38202" targe=
t=3D"_blank">https://bugs.ruby-lang.org/issues/8211#change-38202</a><br>
<div class=3D"im"><br>
Author: dunric (David Unric)<br>
Status: Open<br>
</div>Priority: Normal<br>
<div class=3D"HOEnZb"><div class=3D"h5">Assignee:<br>
Category: core<br>
Target version:<br>
ruby -v: 2.0.0p0<br>
<br>
<br>
There are significant performance regressions in the newer Ruby versions.<b=
r>
When compared to the last 1.9 patch build, method &amp; lambda calls are ab=
out 3 times slower !<br>
<br>
Benchmarking results:<br>
_____________________________________________________________<br>
Ruby 1.9.3p392<br>
=A0 =A0 =A0 =A0user =A0 =A0 system =A0 =A0 =A0total =A0 =A0 =A0 =A0real<br>
lambda: =A08.310000 =A0 0.000000 =A0 8.310000 ( =A08.315247)<br>
instance method: =A05.210000 =A0 0.000000 =A0 5.210000 ( =A05.219299)<br>
class method: =A05.040000 =A0 0.000000 =A0 5.040000 ( =A05.037483)<br>
<br>
Ruby 2.0.0-p0<br>
=A0 =A0 =A0 =A0user =A0 =A0 system =A0 =A0 =A0total =A0 =A0 =A0 =A0real<br>
lambda: 25.310000 =A0 0.010000 =A025.320000 ( 25.339897)<br>
instance method: 17.870000 =A0 0.000000 =A017.870000 ( 17.882656)<br>
class method: 17.630000 =A0 0.010000 =A017.640000 ( 17.650515)<br>
<br>
Ruby 2.1.0-dev<br>
=A0 =A0 =A0 =A0user =A0 =A0 system =A0 =A0 =A0total =A0 =A0 =A0 =A0real<br>
lambda: 19.210000 =A0 0.000000 =A019.210000 ( 19.227314)<br>
instance method: 13.930000 =A0 0.000000 =A013.930000 ( 13.936974)<br>
class method: 14.000000 =A0 0.000000 =A014.000000 ( 14.001582)<br>
_____________________________________________________________<br>
<br>
<br>
The code:<br>
_____________________________________________________________<br>
require &#39;benchmark&#39;<br>
<br>
do_custom_stuff =3D lambda { 1 + 1 + 1 }<br>
<br>
class CustomStuff<br>
=A0 def self.do<br>
=A0 =A0 1 + 1 + 1<br>
=A0 end<br>
<br>
=A0 def do<br>
=A0 =A0 1 + 1 + 1<br>
=A0 end<br>
end<br>
<br>
custom_stuff =3D CustomStuff.new<br>
<br>
Benchmark.bm { |b|<br>
=A0 =A0MANY =3D 50_000_000<br>
=A0 =A0b.report(&quot;lambda:&quot;) =A0 =A0 =A0 =A0 =A0{ MANY.times { do_c=
ustom_stuff.call }}<br>
=A0 =A0b.report(&quot;instance method:&quot;) { MANY.times { custom_stuff.d=
o =A0 =A0 =A0}}<br>
=A0 =A0b.report(&quot;class method:&quot;) =A0 =A0{ MANY.times { CustomStuf=
f.do =A0 =A0 =A0 }}<br>
}<br>
_____________________________________________________________<br>
<br>
<br>
--<br>
<a href=3D"http://bugs.ruby-lang.org/" target=3D"_blank">http://bugs.ruby-l=
ang.org/</a><br>
<br>
</div></div></blockquote></div><br></div>

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