[erlang-questions] couchdb performace 10x: using NIF for file io

Joel Reymont <>
Sun Oct 24 22:59:11 CEST 2010


On Oct 24, 2010, at 7:16 PM, Kenneth Lundin wrote:

> I wonder how responsive the system is to other events when running the
> benchmark.

The benchmark simulates several hundred clients hitting a (mochiweb) web server to read and write couchdb (json) documents. The system seems to stay -highly- responsive, 10x so compared to the same system not using NIFs at all. 

If low write response time is taken as a measure of system responsiveness then the first graph shows that the responsiveness of the system has increased dramatically. The write response here is the take taken to process a web request to write a couch document.

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