A t2.medium starts with enough credits for about 15 minutes of 2 core CPU saturation and accumulates 12 minutes/hour thereafter. In non-burst mode it is about 5

A t2.medium starts with enough credits for about 15 minutes of 2 core CPU saturation and accumulates 12 minutes/hour thereafter. In non-burst mode it is about 5X slower. For this type of workload you'd likely be better off with a c3 or m3. t2 is a better fit for long term usage with periodic spikes (20% or less of total operational time).