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Bug #8335

closed

Performance regression with many threads

Added by mperham (Mike Perham) over 11 years ago. Updated over 11 years ago.

Status:
Closed
Assignee:
-
Target version:
-
ruby -v:
ruby 2.0.0p0 (2013-02-24 revision 39474) [x86_64-darwin12.3.0]
[ruby-core:54603]

Description

I've created a simple case to reproduce a performance problem with Sidekiq. A customer is using 200 worker threads to process background jobs and finding it to be quite slow. To process 50,000 jobs, it takes Ruby 1.9.3 about 200 seconds. With Ruby 2.0, the time required is almost double. Please see instructions to reproduce the problem here:

https://github.com/mperham/sidekiq/tree/master/myapp#ruby-20-slowness-with-big-concurrency

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