3 ms·

Making your ruby fly

41 points by alisnic 14y ago

Inspired by http://spin.atomicobject.com/2012/11/06/is-your-application-running-with-ruby-slow/

ksec 14y ago
That is 6x improvement in speed. Why cant some of these become default?
- boundlessdreamz 14y ago
  IIRR Falcon patches improve 'require' speed which is significant only when you boot up. I think some variation of it will be in 2.0
- alisnic 14y ago
  Please note that this difference is only in this scenario (rake routes), it largely varies in other ones. Also, a big part of falcon patch is the ruby 2.0 garbage collector, which obviously will be available in ruby 2.0.
donw 14y ago
2x improvement in my 'rake spec' runtime... not bad! If you're using rbenv, you can pass CFLAGS to it on the command line, like so: `CFLAGS='-O2' rbenv install ...`
- josephlord 14y ago
  Better than 2x for me adding '-O3': time bundle exec parallel_rspec spec/ ... 778 examples, 0 failures, 28 pendings Before - OS X (2.4GHz Core Duo 2): Took 319.461302 seconds real 5m26.322s user 6m16.837s sys 0m7.062s After - OS X (2.4GHz Core Duo 2): Took 123.58472 seconds real 2m7.208s user 2m19.427s sys 0m5.414s Before - Ubuntu (1.8GHz AMD Phenom quad core) Took 247.467126561 seconds real 4m8.867s user 9m41.552s sys 0m6.188s After - Ubuntu (1.8GHz AMD Phenom quad core) Took 90.244449901 seconds real 1m32.865s user 3m41.434s sys 0m6.136s
  - cheald 14y ago
    Is that just with the CFLAGS, or did you include the Falcon patches?
    - josephlord 14y ago
      CFLAGS (-O3) only! Nearly factor of 3 improvement. I think I'll repost this link next week when more people are in work mode. It could save a lot of time and CPU cycles for a lot of people. It's a shame the default isn't better (not sure if it is RVM issue or the Ruby package itself or if I can configure a user/system default build config).
      - cheald 14y ago
        Wow, that's impressive. My results weren't nearly as good - maybe 5-8% or so, but I'm at ~5.4s load time on an app that takes almost 30 sec on vanilla MRI, so that's not too bad. It is indeed a shame the defaults aren't better. I wonder if there's a reason that it's not default. If not, maybe a pull request is warranted.
hieronymusN 14y ago
For a better understanding of CFLAGs in general: http://www.gentoo.org/doc/en/gcc-optimization.xml http://www.gentoo.org/doc/en/gcc-optimization.xml
gazd 14y ago
for rvm `rvm install ruby-1.9.3-p286 --patch falcon -n falcon`
base 14y ago
Anyone knows the CFlags for EC2 instances?

41 points by alisnic 14y ago

Inspired by http://spin.atomicobject.com/2012/11/06/is-your-application-running-with-ruby-slow/

ksec 14y ago

That is 6x improvement in speed. Why cant some of these become default?

boundlessdreamz 14y ago
IIRR Falcon patches improve 'require' speed which is significant only when you boot up. I think some variation of it will be in 2.0
alisnic 14y ago
Please note that this difference is only in this scenario (rake routes), it largely varies in other ones. Also, a big part of falcon patch is the ruby 2.0 garbage collector, which obviously will be available in ruby 2.0.

donw 14y ago

2x improvement in my 'rake spec' runtime... not bad! If you're using rbenv, you can pass CFLAGS to it on the command line, like so: `CFLAGS='-O2' rbenv install ...`

josephlord 14y ago
Better than 2x for me adding '-O3': time bundle exec parallel_rspec spec/ ... 778 examples, 0 failures, 28 pendings Before - OS X (2.4GHz Core Duo 2): Took 319.461302 seconds real 5m26.322s user 6m16.837s sys 0m7.062s After - OS X (2.4GHz Core Duo 2): Took 123.58472 seconds real 2m7.208s user 2m19.427s sys 0m5.414s Before - Ubuntu (1.8GHz AMD Phenom quad core) Took 247.467126561 seconds real 4m8.867s user 9m41.552s sys 0m6.188s After - Ubuntu (1.8GHz AMD Phenom quad core) Took 90.244449901 seconds real 1m32.865s user 3m41.434s sys 0m6.136s
- cheald 14y ago
  Is that just with the CFLAGS, or did you include the Falcon patches?
  - josephlord 14y ago
    CFLAGS (-O3) only! Nearly factor of 3 improvement. I think I'll repost this link next week when more people are in work mode. It could save a lot of time and CPU cycles for a lot of people. It's a shame the default isn't better (not sure if it is RVM issue or the Ruby package itself or if I can configure a user/system default build config).
    - cheald 14y ago
      Wow, that's impressive. My results weren't nearly as good - maybe 5-8% or so, but I'm at ~5.4s load time on an app that takes almost 30 sec on vanilla MRI, so that's not too bad. It is indeed a shame the defaults aren't better. I wonder if there's a reason that it's not default. If not, maybe a pull request is warranted.

hieronymusN 14y ago

For a better understanding of CFLAGs in general: http://www.gentoo.org/doc/en/gcc-optimization.xml http://www.gentoo.org/doc/en/gcc-optimization.xml

gazd 14y ago

for rvm `rvm install ruby-1.9.3-p286 --patch falcon -n falcon`

base 14y ago

Anyone knows the CFlags for EC2 instances?