I've not tried it on a sitting day, but I would think it would take perhaps two minutes to walk from the Federation Chamber to the chamber.
In our case, the amount of time available for a division is four minutes for the ringing of the bells. This time was set when the building was first occupied by the Parliament as providing an opportunity for someone walking, but not running, from the furthest point from the chamber in order to be able to get there in time to take part in the vote.