App Engine Datastore - devserver limits

I'm trying to test the efficiency of the Google App Engine Datastore database. I want to know how fast it will query over a large dataset. And by large, I mean like 5-10mil entities of the same kind.

The devserver only lets me input 1000 entities of 开发者_JAVA百科the same kind. Is there a way to up this limit? Thanks

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I presume you're talking about the admin interface on http://localhost:8080/_ah/admin/? If you want to insert many entries, you should be using code, or the bulkloader. There's no limit on the number of entries you can insert using those methods.

This won't be particularly illustrative, though: The performance of the dev_appserver datastore is not representative of the performance of the production datastore. dev_appserver currently stores data in memory, so once you exceed what can be held in your physical RAM, it will slow down dramatically. Obviously, nothing similar applies to the production datastore!