On Wed, Aug 24, 2016 at 02:16:02PM -0700, Junio C Hamano wrote:
> * jk/pack-objects-optim-mru (2016-08-11) 4 commits
> (merged to 'next' on 2016-08-11 at c0a7dae)
> + pack-objects: use mru list when iterating over packs
> + pack-objects: break delta cycles before delta-search phase
> + sha1_file: make packed_object_info public
> + provide an initializer for "struct object_info"
> "git pack-objects" in a repository with many packfiles used to
> spend a lot of time looking for/at objects in them; the accesses to
> the packfiles are now optimized by checking the most-recently-used
> packfile first.
> Will hold to see if people scream.
Just a note that we've been running with this at GitHub on all of our
servers for a bit over a week, and no screaming yet. That's not
necessarily proof of anything, but it does make the audience of "people"
a bit bigger than just "next", as we run quite a few invocations of
pack-objects in a day.
I don't think that changes anything in the near future, since this is
obviously not for v2.10, but barring any complaints, it's probably a
reasonable topic to consider for the version after (and of course I'll
relay any issues we come across on our servers).
I'm planning to deploy the delta-cache topic soon, too, so that should
give it some good exercise.
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