Gentoo Archives: gentoo-scm

From: "Robin H. Johnson" <robbat2@g.o>
To: gentoo-scm@l.g.o
Subject: Re: [gentoo-scm] meeting followup: repo layout
Date: Wed, 27 Oct 2010 07:57:07
In Reply to: Re: [gentoo-scm] meeting followup: repo layout by Dirkjan Ochtman
On Wed, Oct 27, 2010 at 09:43:50AM +0200, Dirkjan Ochtman wrote:
> On Wed, Oct 27, 2010 at 09:34, Robin H. Johnson <robbat2@g.o> wrote: > > For comparison, what would the overhead costs of hg be above? > Mercurial would be about O(f + d + 10r).
> But wouldn't the real git inode space be O(35r) directly after > repacking, but grow O(rev) until the next repack?
Correct, I explicitly noted "bare minimum number of inodes" for that reason. Git's more common case is: O(35r + 2c) where 'c' is the number of unpacked objects. The default repack kicks in around 6700 unpacked objects (where an object is a commit, tree, or file blob, and every commit has at least 3 objects). So it would be an extra 27MiB worth of inodes until the repack kicks in. I'm also leaving out the fact that there might be a couple of pack files. In these cases, the base notation I've noted gives a good idea of the minimum number of inodes consumed as overhead. -- Robin Hugh Johnson Gentoo Linux: Developer, Trustee & Infrastructure Lead E-Mail : robbat2@g.o GnuPG FP : 11AC BA4F 4778 E3F6 E4ED F38E B27B 944E 3488 4E85