Thanks a lot for the answer and suggestions. As you said, bitmap works with
single pack file. I am checking with Peff.
On Friday, 2 September 2016 01:28:21 UTC+5:30, Philip Oakley wrote:
> ----- Original Message -----
> *Sent:* Thursday, September 01, 2016 7:14 PM
> *Subject:* [git-users] git repo bitmap creation
> Hi Git Experts,
> We have been exploring various ways to improve git cloning time, one among
> them is using bitmap which is suppose to save time "counting objects". but
> i have problem creating bitmap since the repository contains 100's of pack
> files. the bitmap file is not created when i use "git gc".
> I have the following entries in my .gitconfig.
> packSizeLimit = 10m
> writebitmaps = on
> writeBitmapHashCache = on
> If i just dont use "packSizeLimit = 10m", then bitmap is created just by
> running git gc
> Can you please make me understand ?, What i understood is that the bitmap
> is created when there is a single pack file, but if i split it into
> multiple pack file, the bitmap generation fails with the warning
> "warning: disabling bitmap writing, as some objects are not being packed".
> The bitmaps are designed (IIUC) specifically for the case of everything
> being inside the one pack, which is the most optimal for finding the
> If you have many packs thaten the search can span the packs, but the bit
> map does not, so has to give up.
> It is worth exploring the git developers list at www.public-inbox.org/git
> The primary author of the bitmaps code (again IIRC) was Jeff King (Peff),
> so a quicj seach should come up with a much better explanation than my half
> remembered, half understood reply ;-)
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