* Re: [gentoo-dev] Re: RFC: Hosting daily gx86 squashfs images and deltas
@ 2014-01-18 1:29 99% ` Alex Xu
0 siblings, 0 replies; 1+ results
From: Alex Xu @ 2014-01-18 1:29 UTC (permalink / raw
To: gentoo-dev
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On 17/01/14 08:08 PM, heroxbd@gentoo.org wrote:
> Michał Górny <mgorny@gentoo.org> writes:
>
>> However, it may be actually beneficial to provide other durations, like
>> weekly deltas. In my tests, the daily updates for this week summed up
>> to almost 50M while the weekly was barely 20M.
>
> Is there a way to merge the deltas without the original squashfs?
Uh... what? How would that work?
> how fast is the delta generation?
Very.
> It could be done on the server side on the fly and cached.
Too much work.
> Or we provide a set of 16,8,4,2,1 day deltas, then
>
> 16d: 1 piece needed
> 8d: 2 needed
> 4d: 4 needed
> 2d: 8 needed
> 1d: 16 needed
>
> The total of 31 pieces will cover a month (31 days) with at most 5
> deltas to be downloaded.
>
> e.g. If the system is 19 days old, then we download a 1d, 2d, and 16d.
>
This doesn't really help. Consider that deltas require both a *start*
and *end*. It's not as simple as adding it all up, since you would need
a 19-3d, then 3-1d, then 1-0d.
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2014-01-17 16:27 [gentoo-dev] RFC: Hosting daily gx86 squashfs images and deltas Michał Górny
2014-01-17 19:19 ` [gentoo-dev] " Duncan
2014-01-17 19:30 ` Michał Górny
2014-01-18 1:08 ` heroxbd
2014-01-18 1:29 99% ` Alex Xu
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