VIvinnyglennon·Nov 19, 2018Submission
Go faster, off the Rails – Benchmarks for your whole Rails app
1 points · Open discussionzombocom
derailed_benchmarks
Ruby2015–2018
zombocom / derailed_benchmarks
derailed_benchmarks
Go faster, off the Rails - Benchmarks for your whole Rails app
4Distinct people
4Mentions
0Explicit recommenders
3.1KGitHub stars
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Go faster, off the Rails - Benchmarks for your whole Rails app
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This week on Hacker News
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HN mentions by year4 dated mentions
Observed mentions: 2015-01-16 15:30:31 UTC to 2018-11-19 11:08:16 UTC.
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| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2015 | 2015-01-01 00:00:00 UTC | 2016-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 1 | 1 | 0 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 1 | 1 | 0 |
What Hacker News says
4 sourcesBenchmarking Tools for Rails Application
3 points · Open discussion> where to you think there are hot places where is easy to go and improve?
I tried to write some fancy libs to pull out easy optimizations https://github.com/schneems/let_it_go. It wasn't dramatic but it did find some things to optimize. This lead me to: https://bugs.ruby-lang.org/issues/11375 and https://github.com/rails/rails/pull/20946, though again neither is game changing. I really like this collection of micro optimizations: https://github.com/JuanitoFatas/fast-ruby. I would love to see a tool written that auto suggests code changes. I like http://github.com/schneems/derailed_benchmarks which is what i used for finding object hotspots in that PR. Ultimately I am counting on the VM to make my world easier and faster, as I mostly like writing ruby code, not mangled and optimized barely recognizable ruby code.
> Can we dream to a more
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faster rails5?
I think we're to the point where there's not many low hanging performance optimizations at the low level. Most apps that are really slow are slow because of their codebase and not Rails, that doesn't mean we shouldn't make Rails as fast as possible. Many of these optimizations I made here were found based on my apps use of the Rails api. I'm hoping others will benchmark their apps and look where we can save a few fractional milliseconds here and there. It's all the small speed-ups that make an overall faster product.
> I found most of the time that AR is quite slow
There are different APIs that are faster than others, i believe the `Model#find` where you pass in a primary key is pretty fast. I actually had a hard time finding any optimizable code in AR, MR. Patterson and Sean Griffin have done a great job of optimizing, though each codebase and use case is different. I've used sequel and really enjoy it. Jeremy writes some amazing code https://github.com/mime-types/ruby-mime-types/commit/8ce1add... and is a great human.
This is really really cool. Thanks for posting. I'm especially interested in memory usage right now. I wrote a way to generate load and measure memory impact on your app: https://github.com/schneems/derailed_benchmarks
Comparing the two, it looks like this app only uses heap size for memory and doesn't take into account memory that isn't being used but hasn't been freed. https://www.dropbox.com/s/679sd83gqlkligk/Screenshot%202015-...
From `ps` i'm seeing about ~ 200mb RSS usage where rbkit is only showing ~50mb. I wonder what we could do to increase the accuracy here without having to shell out (very slow).
Also as a note if the gem install fails, on a mac I needed to run this:
$ brew install msgpack
$ brew install zeromq
Then it worked fine. Thanks again! Projects like this get me really excited for a future with faster applica
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tions and better informed developers.