Re: Git is not scalable with too many refs/*

On Friday, September 30, 2011 04:06:31 pm Martin Fick wrote:

OK, I narrowed it down I believe.  If I comment out the
invalidate_cached_refs() line in write_ref_sha1(), it
speeds through this section.

I guess this makes sense, we invalidate the cache and
have to rebuild it after every new ref is added? 
Perhaps a simple fix would be to move the invalidation
right after all the refs are updated?  Maybe
write_ref_sha1 could take in a flag to tell it to not
invalidate the cache so that during iterative updates it
could be disabled and then run manually after the
update?

Would this solution be acceptable if I submitted a patch to 
do it?  My test shows that this will make a full fetch of 
~80K changes go from 4:50min to 1:50min,

-Martin

-- 
Employee of Qualcomm Innovation Center, Inc. which is a 
member of Code Aurora Forum