On Thu, 2006-02-09 at 23:47 +0100, Molle Bestefich wrote:
> Daniel Berlin wrote:
> > It is a window size of 1 meg at a time.
> > So if nothing matches within that 1 meg window, you are out.
> >
> > My guess is that because you are not sorting in an order where new files
> > appear last, the tar gets thrown off by more than the window size and
> > nothing ever matches.
>
> Ok, sounds reasonable, thanks :).
>
> But how does that hold up against the repository size:
>
> > > /repos/repos/test2/db/revs/:
> > > total 1927032
> > > -rw-r--r-- 1 nobody nogroup 115 Feb 6 08:09 0
> > > -rw-r--r-- 1 nobody nogroup 697837468 Feb 6 08:44 1
> > > -rw-r--r-- 1 nobody nogroup 636746962 Feb 10 01:08 2
> > > -rw-r--r-- 1 nobody nogroup 636746967 Feb 10 02:10 3
>
> There's a 5 byte difference between the two last revs.
That doesn't really mean much :)
> It seems odd to me that the tar file should be off by more than one
> MB, but the repository files end up almost exact the same size.. I
> don't know the internals, so maybe I'm just not thinking straight :)..
>
>
> Does increasing the window size increase the diff time exponentially?
No, it will mainly increase memory usage :)
> Is changing window size to 128 MB ok, or does madness lie that way?
>
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Received on Fri Feb 10 00:44:10 2006