16.2. Latency overhead expectations

As for throughput, when estimating the latency overhead associated with DRBD, there are some important natural limitations to consider:

The sum of the two establishes the theoretical latency minimum incurred to DRBD. DRBD then adds to that latency a slight additional latency overhead, which can be expected to be less than 1 percent.

[Note]Note

Latency may be influenced by a number of other factors, including CPU cache misses, context switches, and others.