Re: [PATCH 16/16] p0002-index.sh: add perf test for the index formats

On 08/02, Nguyen Thai Ngoc Duy wrote:

On Thu, Aug 2, 2012 at 6:02 PM, Thomas Gummerer [off-list ref] wrote:

quoted

Add a performance test for index version [23]/4/5 by using
git update-index --force-rewrite, thus testing both the reader
and the writer speed of all index formats.

On the testing side, it may be an interesting idea to force the whole
test suite to use v5 by default. There are a few test cases that
require a specific index version. We can identify and rule them out.
That'll give v5 a lot more exercises.

The test suite already works with index v5. Patch 5 and 6 fix the only
cases where index-v5 would fail. To make it use index-v5 you can just
set the INDEX_VERSION_DEFAULT to 5 in read-cache.c

I've never used it for performance testing yet, I'll try to run it with
both versions and post the results. I don't think the results will be
a lot different thought, since the test-suite usually uses small
repositories.