public inbox for gentoo-dev@lists.gentoo.org
 help / color / mirror / Atom feed
Search results ordered by [date|relevance]  view[summary|nested|Atom feed]
thread overview below | download: 
* 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

[-- Attachment #1: Type: text/plain, Size: 1061 bytes --]

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.



[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 836 bytes --]

^ permalink raw reply	[relevance 99%]

Results 1-1 of 1 | reverse | options above
-- pct% links below jump to the message on this page, permalinks otherwise --
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

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox