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mperham--sidekiq/myapp
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Mike Perham 76e823a8b1 Add worker for testing latency
2015-10-08 10:19:55 -07:00
..
app Benchmark setup, 56s for 1.9.3, 50s for 2.0.0 2013-06-30 12:15:19 -07:00
bin Update application rails stuff 2015-09-30 16:16:06 -07:00
config Add worker for testing latency 2015-10-08 10:19:55 -07:00
db Holy crap, it boots Rails3 and actually sends messages to the workers! 2012-01-23 14:05:03 -08:00
lib Holy crap, it boots Rails3 and actually sends messages to the workers! 2012-01-23 14:05:03 -08:00
log Holy crap, it boots Rails3 and actually sends messages to the workers! 2012-01-23 14:05:03 -08:00
script Holy crap, it boots Rails3 and actually sends messages to the workers! 2012-01-23 14:05:03 -08:00
.gitignore Holy crap, it boots Rails3 and actually sends messages to the workers! 2012-01-23 14:05:03 -08:00
bench.rb Benchmark setup, 56s for 1.9.3, 50s for 2.0.0 2013-06-30 12:15:19 -07:00
Capfile Add capistrano integration [#52] 2012-02-26 20:36:30 -08:00
config.ru Holy crap, it boots Rails3 and actually sends messages to the workers! 2012-01-23 14:05:03 -08:00
Gemfile Cleanup, profiling experiments 2015-09-21 14:50:00 -07:00
Procfile Add a Procfile for testing Foreman 2014-10-22 13:57:41 -07:00
Rakefile Add instructions for reproducing Ruby 2.0 slowness 2013-04-26 09:00:03 -07:00
readme.md update 2013-04-26 09:02:07 -07:00
simple.ru Remove explicit session use, add monkeypatch for Rails bug, #2460 2015-07-29 09:55:35 -07:00

readme.md

Ruby 2.0 slowness with big concurrency

To reproduce:

Install redis locally and checkout the Sidekiq repo:

git clone git://github.com/mperham/sidekiq
cd sidekiq/myapp
bundle

Load lots of jobs into Redis, you can edit Rakefile to change the job count:

> time bundle exec rake load_jobs
2013-04-26T15:32:37Z 66670 TID-ov6pgqt3k INFO: Sidekiq client using redis://localhost:6379/0 with options {:size=>2, :namespace=>"foo"}

real	0m49.206s
user	0m45.037s
sys	0m3.558s

Start Sidekiq with 200 worker threads to process those jobs. You will need to kill Sidekiq with Ctrl-C as soon as log messages stop flying by.

> time bundle exec sidekiq -c 200
...
2013-04-26T15:46:25Z 67059 TID-ovwfo7krk EmptyWorker JID-cce0eed5ea7281b720841ecc INFO: done: 0.224 sec
2013-04-26T15:46:25Z 67059 TID-ovwfojqdg EmptyWorker JID-850c242ec75de77400838fa9 INFO: done: 0.231 sec
2013-04-26T15:46:25Z 67059 TID-ovwfo6u94 EmptyWorker JID-fd2422116a771dc67a848489 INFO: done: 0.223 sec
2013-04-26T15:46:25Z 67059 TID-ovwfo94ag EmptyWorker JID-45ecb59a43e62ebb574ee0da INFO: done: 0.223 sec
2013-04-26T15:46:25Z 67059 TID-ovwfonv7s EmptyWorker JID-c7beabde4c0141b0669c4baf INFO: done: 0.221 sec
^C2013-04-26T15:46:27Z 67059 TID-ovwfalyvw INFO: Shutting down
2013-04-26T15:46:27Z 67059 TID-ovwfefrzw INFO: Shutting down 200 quiet workers

real	3m37.921s
user	3m3.110s
sys	1m4.783s
> ruby -v
ruby 1.9.3p374 (2013-01-15 revision 38858) [x86_64-darwin12.3.0]

Now try with various Rubies to see how your choice in VM performs.

2013-04-26T15:57:04Z 67357 TID-ow0muevo8 EmptyWorker JID-cb03f00310af3590009b19fe INFO: done: 0.189 sec
2013-04-26T15:57:04Z 67357 TID-ow0muqgxc EmptyWorker JID-89710c72bf4a343834833bc4 INFO: done: 0.19 sec
2013-04-26T15:57:04Z 67357 TID-ow0ms6rc4 EmptyWorker JID-bb358d8d8f02af9734b8a3ff INFO: done: 0.186 sec
2013-04-26T15:57:04Z 67357 TID-ow0mwn908 EmptyWorker JID-7c032c55e6ab9a63dc31f175 INFO: done: 0.188 sec
2013-04-26T15:57:04Z 67357 TID-ow0mv6m80 EmptyWorker JID-73dc04f9e431ebf433707d02 INFO: done: 0.188 sec
^C2013-04-26T15:57:11Z 67357 TID-ow0m8kxh4 INFO: Shutting down
2013-04-26T15:57:11Z 67357 TID-ow0mwqr20 INFO: Shutting down 200 quiet workers

real	5m55.033s
user	5m6.156s
sys	1m4.886s
> ruby -v
ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-darwin12.3.0]