edx/edx-platform — pull request #4632 by tymofij (2014-07-31 18:53:47+00:00)
Title: Compute graders performance optimization

@cahrens @dan-f

After merging https://github.com/edx/edx-platform/pull/4425 rendering time of Justice course decreased from 5.5 seconds to 8 seconds in my environment. This was caused by course graders being recomputed for each xblock. I propose we compute them just once.