Also if you launch the more instance in a cluster, the faster to load. Our survey: http://www.slideshare.net/Hapyrus/scalability-of-amazon-reds... We tried much more files (5MB each) to load, but it takes longer time in total.. We're trying to get appropriate size and file numbers.

Our idea is to change from JSON on loading to Redshift, continuously. http://www.hapyrus.com/pages/flydata-for-redshift

We wrote the blog post about this benchmark. http://www.hapyrus.com/blog/posts/behind-amazon-redshift-is-...