On Sun, Dec 04, 2016 at 09:23:37PM +0100, Karel Gardas wrote:
> On Sun, Dec 4, 2016 at 8:57 PM, Joerg Sonnenberger <jo...@bec.de> wrote:
> > On Sun, Dec 04, 2016 at 08:50:44PM +0100, Karel Gardas wrote:
> >> Otherwise as Nikita recommended, switching off repo checksums helps a
> >> lot, but then make sure you are on the filesystem like ZFS/btrfs which
> >> does that for you transparently and you do not need to do that on the
> >> fossil side.
> >
> > Eh, no. You do not need a file system with automatic hashing. Every
> > single file is still recorded by checksum in Fossil. It is not what the
> > repo checksum option does.
> 
> Errhmm, thanks for correction. Am I right that repo checksum switched
> on means that modified files will be those where checksum stored and
> checksum computed from the file on fs is different? And once you
> switch that off, you rely purely on comparison of modification time on
> file in fs and I guess stored modif time in repo db? If so, then
> indeed I've been completely mistaken and thank you very much for your
> kind correction. If however I'm still off, I would appreciate
> reference to some material explaining repo/chksums business in fossil.

No. What repo checksum does is compute a separate checksum over the
concatenation of all files.

Joerg
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