Re: No, passenger 5.0 is not faster than unicorn :)

["Bráulio Bhavamitra" <braulio@eita.org.br>]

Hello Hongli,

Thank you the guide, I've already learned a bit from it.

We already use nginx for static files and ssl and varnish for caching
public pages, so maybe turbocaching won't help too much.

In this test I've tested passenger in standalone mode (--max-pool-size
1) and unicorn with one worker. On a slow page, the variation was
minimal (~8.26 req/s in unicorn and ~8.11 in passenger). I haven't
tested fast and cacheable page.

Also, I've used ab for benchmarking. Next time will try wrk.

cheers,
bráulio

On Wed, Dec 3, 2014 at 8:00 AM, Hongli Lai <hongli@phusion.nl> wrote:
> Unicorn *is* in general very good and very efficient, no doubt about that.
> Eric Wong has made great design choices and is an excellent programmer.
>
> Having said that, in certain specific cases there's still room for
> improvement. That's why we focused so much on microoptimizations and
> specific optimizations like turbocaching. Have you followed Phusion
> Passenger's Server Optimization Guide?
> https://www.phusionpassenger.com/documentation/ServerOptimizationGuide.html
>
> Also, you have to ensure that your Rails app sets the correct caching
> headers. By default, Rails sets "Cache-Control: private, no-store" so that
> the turbocache cannot kick in. You should see very different results if you
> add "headers['Cache-Control'] = 'public'" to your Rails app. If you need any
> help with this, please feel free to contact me off-list. I'd be happy to
> help. We have also a benchmarking kit so that you can double check the
> results; email me if you're interested in this.
>
> As Sam said, most of the time will be spent in the Rails app. But
> turbocaching is one notable exception: it's the one feature that can speed
> things up even if your app is slow - provided that you set HTTP caching
> headers correctly.
>
> Unicorn is excellent at what it does: it's a minimal server with a specific
> I/O model that is supposed to be used behind a buffering reverse proxy.
> There is nothing wrong with that, and for the workloads that it's designed
> for, it's great. Phusion Passenger has merely chosen a non-generalist
> approach that aims to squeeze additional performance from specific cases. Of
> course, nothing's a silver bullet. Like any tool, it only works if you use
> it correctly.
>
> On Wed, Dec 3, 2014 at 10:50 AM, Bráulio Bhavamitra <braulio@eita.org.br>
> wrote:
>>
>> Hello all,
>>
>> I've just tested a one instance each (one worker with unicorn and
>> --max-pool-size 1 passenger 5) on the rails app I work.
>>
>> And the results are just as I expected, no miracle at all: Unicorn is
>> still the fatest!
>> (the difference is only a few milliseconds less per request)
>>
>> The blocking design of unicorn is proving itself very efficient.
>>
>> cheers!
>> bráulio
>>
>
>
>
> --
> Phusion | Web Application deployment, scaling, and monitoring solutions
>
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