Products that scale linearly to hundreds of servers

I see this all the time:

[product] scales linearly to hundreds of servers

I haven’t seen a benchmark yet that’s truly a straight line. I would like to see one.

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I'm Baron Schwartz, the founder and CEO of VividCortex. I am the author of High Performance MySQL and lots of open-source software for performance analysis, monitoring, and system administration. I contribute to various database communities such as Oracle, PostgreSQL, Redis and MongoDB. More about me.