Comment 11 for bug 388269

John's branch <https://code.launchpad.net/~jameinel/bzr/2.4-too-much-walking-388269/+merge/71852> for me gives decent performance branching from lp:gcc-linaro into a new repository: after about 90s it is done looking at the ancestry and then it starts downloading data at roughly wire speed.

However, branching from a stacked branch is not helped by this - we could either split off a follow on bug or leave this open.

In the short term perhaps we should unstack the key linaro series branches; that will probably help them a bit in other ways anyhow.