From: Thomas Rast <trast@student.ethz.ch>
Date: Tue, 6 Dec 2011 17:43:36 +0000 (+0100)
Subject: Test the current state of the cache-tree optimization
X-Git-Tag: v1.7.9-rc0~53^2~3
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/4eb0346fb8f8a59a1fb7a6bd01154655a7020087?hp=4eb0346fb8f8a59a1fb7a6bd01154655a7020087

Test the current state of the cache-tree optimization

The cache-tree optimization originally helped speed up write-tree
operation.  However, many commands no longer properly maintain -- or
use an opportunity to cheaply generate -- the cache-tree data.  In
particular, this affects commit, checkout and reset.  The notable
examples that *do* write cache-tree data are read-tree and write-tree.

This sadly means most people no longer benefit from the optimization,
as they would not normally use the plumbing commands.

Document the current state of affairs in a test file, in preparation
for improvements in the area.

Signed-off-by: Thomas Rast <trast@student.ethz.ch>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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