On Mon, Jun 27, 2011 at 01:42:43PM +0100, Philip Martin wrote: > It's difficult to get the wording right because we don't know enough > about the relative performance. Should we be indicating any preference > for one over the other? Using "might" can be interpreted as upgrade > being preferred and that there is a small chance that it will be slow. > For all we know upgrade is usually slower and there is only a small > chance that it is faster. > > If we know nothing about a working copy, apart from it being unmodified, > and nothing about the local machine, the server or the network, do we > recommend upgrade or checkout? I don't know. >
Maybe we should tell people that they should only use update if they have local mods, and perform a checkout otherwise. This rule of thumb is probably going to yield the best overall results. Working copy size definitely is a factor here. I remember earlier measurements that suggested upgrade performance was linear to WC size. But I don't think that matches what I've observed.
