* rainbows slower?
@ 2012-06-08 16:04 Joseph McDonald
[not found] ` <CAKN4AWvqRyxTMOVNjc5bGzrkOKGZJ6TsTwBuYu_ZekXaeqT9ag-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: Joseph McDonald @ 2012-06-08 16:04 UTC (permalink / raw)
To: rainbows-talk-GrnCvJ7WPxnNLxjTenLetw
Hi,
I have a "hello world" sinatra app, benchmark:
ab -n 1000 -c 100 http://$mysite/
Total transferred: 264000 bytes
HTML transferred: 13000 bytes
Requests per second: 308.76 [#/sec] (mean)
Time per request: 323.871 [ms] (mean)
Time per request: 3.239 [ms] (mean, across all concurrent requests)
If I put rainbows in front of it, I get:
Total transferred: 272000 bytes
HTML transferred: 13000 bytes
Requests per second: 61.62 [#/sec] (mean)
Time per request: 1622.745 [ms] (mean)
Time per request: 16.227 [ms] (mean, across all concurrent requests)
rainbow config looks like:
worker_processes 7 # i'm on an 8 core system
Rainbows! do
use :EventMachine # sinatra app using "thin"
worker_connections 1024
end
config.ru looks like:
require './webserver'
run Sinatra::Application
ruby version is: ruby 1.9.3p194
I tried telling apachebench to use keepalives (-k) and that slowed
rainbows down more (and sped up the straight sinatra app).
I have changed worker_processes and worker_connections with no effect.
I added keepalive_timeout 0 to the Rainbows! block with no effect.
any idea why rainbows is slower? I'd like to take advantage of all my cores.
thanks,
Joe
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* Re: rainbows slower?
[not found] ` <CAKN4AWvqRyxTMOVNjc5bGzrkOKGZJ6TsTwBuYu_ZekXaeqT9ag-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
@ 2012-06-08 17:39 ` Eric Wong
[not found] ` <20120608173920.GA20100-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: Eric Wong @ 2012-06-08 17:39 UTC (permalink / raw)
To: Rainbows! list
Joseph McDonald <superjoe-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> Hi,
>
> I have a "hello world" sinatra app, benchmark:
> ab -n 1000 -c 100 http://$mysite/
>
> Total transferred: 264000 bytes
> HTML transferred: 13000 bytes
> Requests per second: 308.76 [#/sec] (mean)
> Time per request: 323.871 [ms] (mean)
> Time per request: 3.239 [ms] (mean, across all concurrent requests)
>
> If I put rainbows in front of it, I get:
>
> Total transferred: 272000 bytes
> HTML transferred: 13000 bytes
> Requests per second: 61.62 [#/sec] (mean)
> Time per request: 1622.745 [ms] (mean)
> Time per request: 16.227 [ms] (mean, across all concurrent requests)
>
> rainbow config looks like:
>
> worker_processes 7 # i'm on an 8 core system
> Rainbows! do
> use :EventMachine # sinatra app using "thin"
> worker_connections 1024
> end
What is your RACK_ENV set to? I'm not sure how Thin sets it or defaults
to, but you can pass the "-E" switch to Rainbows!:
rainbows -E none ...
(or use the RACK_ENV environment variable)
Iff you're on Linux, and RACK_ENV doesn't help, can you try:
listen host_port, :tcp_defer_accept => false
I still need to investigate what (I think) is a bug in Linux which
makes TCP_DEFER_ACCEPT behave erratically.
> config.ru looks like:
> require './webserver'
> run Sinatra::Application
Can you show us your application?
> ruby version is: ruby 1.9.3p194
>
> I tried telling apachebench to use keepalives (-k) and that slowed
> rainbows down more (and sped up the straight sinatra app).
> I have changed worker_processes and worker_connections with no effect.
> I added keepalive_timeout 0 to the Rainbows! block with no effect.
Can you also verify your app is setting Content-Length (or
Transfer-Encoding: chunked) in its responses?
> any idea why rainbows is slower? I'd like to take advantage of all my
> cores.
I've listed what I can think of above. Thanks for giving Rainbows!
a short. I'd like to figure out why performance is worse, too.
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* Re: rainbows slower?
[not found] ` <20120608173920.GA20100-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
@ 2012-06-08 23:31 ` Eric Wong
0 siblings, 0 replies; 3+ messages in thread
From: Eric Wong @ 2012-06-08 23:31 UTC (permalink / raw)
To: Rainbows! list; +Cc: Joseph McDonald
Eric Wong <normalperson-rMlxZR9MS24@public.gmane.org> wrote:
> What is your RACK_ENV set to? I'm not sure how Thin sets it or defaults
> to, but you can pass the "-E" switch to Rainbows!:
>
> rainbows -E none ...
>
> (or use the RACK_ENV environment variable)
I suspect it's RACK_ENV being "development" by default and slowing
things down heavily (Rack::Lint). I wasn't able to reproduce the
drastic differences between thin and Rainbows with RACK_ENV=none on
Rack::Lobster. Not a real app I know, but in the absence of a real one,
it's all I've got.
I used the following config.ru
------------------------------
require "rack/lobster"
use Rack::ContentLength
use Rack::ContentType
run Rack::Lobster.new
------------------------------
and my rainbows.conf.rb
------------------------------
worker_processes 2 # only 2 cores on this machine, I also tried with 1
Rainbows! do
use :EventMachine
worker_connections 1024
end
------------------------------
thin 1.3.1
rainbows 4.3.1
rack 1.4.1
Ruby 1.9.3-p194
Linux 3.4.1 on x86-64
Commands used:
ab -n 1000 -c 100 -k http://127.0.0.1:3000/
RACK_ENV=none thin start -R config.ru
RACK_ENV=none rainbows -c rainbows.conf.rb config.ru -p 3000
I tested without keepalives (-k), too but again, it's too close
to say one server is faster than another based on Rack::Lobster.
For "hello world"-type apps, Rainbows! will use worker_processes
more effectively with keepalives.
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2012-06-08 16:04 rainbows slower? Joseph McDonald
[not found] ` <CAKN4AWvqRyxTMOVNjc5bGzrkOKGZJ6TsTwBuYu_ZekXaeqT9ag-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-06-08 17:39 ` Eric Wong
[not found] ` <20120608173920.GA20100-yBiyF41qdooeIZ0/mPfg9Q@public.gmane.org>
2012-06-08 23:31 ` Eric Wong
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