Re: [ANNOUNCE] Git v2.5.0-rc0

On Fri, Jun 26, 2015 at 09:36:04AM +0000, steve.norman@thomsonreuters.com wrote:

Jeff / Duy,

quoted

Fixes since v2.4
 * Access to objects in repositories that borrow from another one on a
   slow NFS server unnecessarily got more expensive due to recent code
   becoming more cautious in a naive way not to lose objects to pruning.
   (merge ee1c6c3 jk/prune-mtime later to maint).

 * "Have we lost a race with competing repack?" check was too
   expensive, especially while receiving a huge object transfer
   that runs index-pack (e.g. "clone" or "fetch").
   (merge 0eeb077 jk/index-pack-reduce-recheck later to maint).

I was reading through the 2.5 release notes and spotted the above two
entries and I think they are probably fixes related to the NFS
slowness I reported last month.

Yep, especially the latter one.

Did some tests this morning and things are much improved:

Version 2.4.5
  - Local clone of https://github.com/git/git - 8s
  - Clone to NFS - 1m 3s

Version 2.5.0.rc0
  - Local - 7s
  - NFS - 13s

Thanks for the effort in addressing this and sorry I missed the patch to check it out earlier.

No problem, and thanks for the original report. It gave me plenty to
replicate the problem locally, so I felt pretty good about the changes
even without a final test from you. :)

-Peff