On 11/12/2018 9:46 AM, Jeff King wrote:
Here's the series I mentioned earlier in the thread to cache loose objects when answering has_object_file(..., OBJECT_INFO_QUICK). For those just joining us, this makes operations that look up a lot of missing objects (like "index-pack" looking for collisions) faster. This is mostly targeted at systems where stat() is slow, like over NFS, but it seems to give a 2% speedup indexing a full git.git packfile into an empty repository (i.e., what you'd see on a clone). I'm adding René Scharfe and Takuto Ikuta to the cc for their previous work in loose-object caching. The interesting bit is patch 8. The rest of it is cleanup to let us treat alternates and the main object directory similarly.
This cleanup is actually really valuable, and affects much more than this application.
I really think it is a good idea, and hope it doesn't cause too much trouble as the topic is cooking.
Thanks, -Stolee
