← Back to examples

Speedup & Efficiency Calculator

Type in your measured times and core count. Get the two numbers every parallel benchmark reports — and a plain-English verdict on where the missing speedup went.

time on 1 processor
time on p processors
number of processors
Speedup  S(p) = T(1)/T(p)
2.50×
Efficiency  E(p) = S(p)/p
63%

Try these