Making your ruby fly(alisnic.net)
alisnic.net
Making your ruby fly
http://alisnic.net/blog/making-your-ruby-fly/
Inspired by http://spin.atomicobject.com/2012/11/06/is-your-application-running-with-ruby-slow/
5 comments
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 ...`
If you're using rbenv, you can pass CFLAGS to it on the command line, like so: `CFLAGS='-O2' rbenv install ...`
Better than 2x for me adding '-O3':
time bundle exec parallel_rspec spec/
...
778 examples, 0 failures, 28 pendings
Took 319.461302 seconds
real 5m26.322s
user 6m16.837s
sys 0m7.062s
Took 123.58472 seconds
real 2m7.208s
user 2m19.427s
sys 0m5.414s
Took 247.467126561 seconds
real 4m8.867s
user 9m41.552s
sys 0m6.188s
Took 90.244449901 seconds
real 1m32.865s
user 3m41.434s
sys 0m6.136sIs that just with the CFLAGS, or did you include the Falcon patches?
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).
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).
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.
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.
For a better understanding of CFLAGs in general: http://www.gentoo.org/doc/en/gcc-optimization.xml
That is 6x improvement in speed. Why cant some of these become default?
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.
Also, a big part of falcon patch is the ruby 2.0 garbage collector, which obviously will be available in ruby 2.0.
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
Anyone knows the CFlags for EC2 instances?
for rvm
`rvm install ruby-1.9.3-p286 --patch falcon -n falcon`
`rvm install ruby-1.9.3-p286 --patch falcon -n falcon`