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Skylight, a Ruby profiler, free for open source applications

blog.skylight.io

11–20 of 34 posts

Re: Skylight, a Ruby profiler, free for open source applications

#11
If you're building a Rails app, you should be using Skylight. It gives you:

1. What's slow.

2. What's hit frequently.

This combined gives their "agony" ranking for you to fix problems that impact the most. In a very clean UI!

Terrific product. I wish I had Skylight for my Phoenix/Elixir stack.

Re: Skylight, a Ruby profiler, free for open source applications

#12
post #7
post #2

“Skylight is a smart profiler for Ruby on Rails applications.”

Darn, you beat me to it. Product blog operators, please see: https://news.ycombinator.com/item?id=16278142

> Please put a global header on your blog that says "X is a Y that does Z."

Product blog operators, please label your spam as spam. I presume this was posted by Godfrey Chan (http://www.tilde.io/about-us/), an employee of wycats's company.

Re: Skylight, a Ruby profiler, free for open source applications

#13

If you're building a Rails app, you should be using Skylight. It gives you: 1. What's slow. 2. What's hit frequently. This combined gives their "agony" ranking for you to fix problems that impact the most. In a very clean UI! Terrific product. I wish I had Skylight for my Phoenix/Elixir stack.

Does it build up a performance profile over time? As in, do you need to serve thousands of requests before you get a picture?

Re: Skylight, a Ruby profiler, free for open source applications

#14
post #8

Earlier quoted context omitted.

To be clear about the chronology here, wycats made the decision to go with Rust, then did a lot of work in Rust, then became a core team member. He chose Rust because of his needs in Skylight, not because he was already invested in Rust. https://blog.rust-lang.org/2014/12/12/Core-Team.html > Yehuda Katz will be known to many in the Rust community for his work on the initial design and implementation of the Cargo proj…

For slightly more context, I wrote the first lines of Rust code for Skylight as a spike at the end of 2013, and joined the Rust core team more than a year later. :) I was largely inspired by a blog post in June 2013 by Patrick Walton: Removing Garbage Collection From the Rust Language[1] [1]: http://pcwalton.github.io/blog/2013/06/02/removing-garbage-c...

Do you code in Ruby any more or is it all Rust these days? If you had to build a web app what would you use?

Re: Skylight, a Ruby profiler, free for open source applications

#16

If you're building a Rails app, you should be using Skylight. It gives you: 1. What's slow. 2. What's hit frequently. This combined gives their "agony" ranking for you to fix problems that impact the most. In a very clean UI! Terrific product. I wish I had Skylight for my Phoenix/Elixir stack.

Does it build up a performance profile over time? As in, do you need to serve thousands of requests before you get a picture?

No. It starts showing results after a few requests.

Re: Skylight, a Ruby profiler, free for open source applications

#17
post #15

Has anyone used New Relic and switched to Skylight or vice versa? Been looking for some comparisons [1]. [1]: https://twitter.com/sunnyrjuneja/status/951973556170215424

I could never find anything actionable in NewRelic. Seems like interesting data, but nothing I could optimize for. Skylight has identified slow performing areas where we've worked on and watched a downward trend.

Re: Skylight, a Ruby profiler, free for open source applications

#19

If you're building a Rails app, you should be using Skylight. It gives you: 1. What's slow. 2. What's hit frequently. This combined gives their "agony" ranking for you to fix problems that impact the most. In a very clean UI! Terrific product. I wish I had Skylight for my Phoenix/Elixir stack.

Do you find it significantly better than NewRelic?

Re: Skylight, a Ruby profiler, free for open source applications

#20

If you're building a Rails app, you should be using Skylight. It gives you: 1. What's slow. 2. What's hit frequently. This combined gives their "agony" ranking for you to fix problems that impact the most. In a very clean UI! Terrific product. I wish I had Skylight for my Phoenix/Elixir stack.

Do you find it significantly better than NewRelic?

Absolutely better.
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