Re: Speeding Up APT - Project Idea
Hi,
I am so happy to say that my proposal has been accepted. I would like
to thank everyone who encouraged me, especially Michael and David for
their help. I am looking forward to working with you.
On 4/7/11, Ishan Jayawardena <udeshike@gmail.com> wrote:
> Hi,
> I submitted my proposal to Google. Looking forward to your feedback on it.
> thank you.
>
> On 3/26/11, Ishan Jayawardena <udeshike@gmail.com> wrote:
>> Hi,
>> I wrote a project proposal[1] and inserted it into the idea's wiki
>> page[2]. Can you give me your feedbacks on it?
>>
>> Thanks.
>>
>> [1] http://wiki.debian.org/IshanJayawardena
>> [2] http://wiki.debian.org/SummerOfCode2011/AptDebdeltaIntegration
>>
>> On 3/26/11, Michael Vogt <mvo@debian.org> wrote:
>>> On Wed, Mar 23, 2011 at 11:27:48AM +0100, Goswin von Brederlow wrote:
>>>> Ishan Jayawardena <udeshike@gmail.com> writes:
>>>>
>>>> > Hi Michael, Hi all,
>>>> >
>>>> > As you may remember, I talked with you about integrating debdelta
>>>> > into
>>>> > apt-get, on the IRC. I found it interesting and therfore, hope to
>>>> > come
>>>> > up with a project proposal out of it.
>>>>
>>>> It might make more sense to look into zsync and implement the missing
>>>> support to "look into .deb files". The .zsync files could then be
>>>> generated by DAK and could be used with any http mirror.
>>>
>>> The debdelta integration is a good solution for stable and for
>>> security updates IMO. We know it works well and its stable since some
>>> time and well understood. But not that great for unstable. For known
>>> version updates (like security updates) it should produce smaller
>>> deltas than zsync too.
>>>
>>>> The advantage of zsync would be that it can download the delta between
>>>> any 2 versions of a package or between a damaged and actual file of the
>>>> package. With debdelta the mirror would have to contain the exact diff
>>>> between the local version in the apt cache and the current version.
>>>> That
>>>> would be quite unworkable for unstable. Ad the deltas would be far
>>>> larger than the .zsync files.
>>>
>>> The zsync based delta would indeed be preferable (if we can make it
>>> work!). There is even working code around around it here:
>>> https://code.launchpad.net/~felix-feyertag/apt-sync/main
>>> But we never quite finished it and it needs someone to really look
>>> into it again and see whats missing. More research around it is
>>> needed, like how well does the deltas work, what blocksizes to use,
>>> the http range request approach may turn out to be problematic with
>>> various proxies etc. I would love to see someone working on it too,
>>> but I consider it a bit more experimental then the debdelta approach.
>>>
>>> Cheers,
>>> Michael
>>>
>>>
>>
>>
>> --
>> Regards,
>> Ishan Jayawardena.
>>
>
>
> --
> Regards,
> Ishan Jayawardena.
>
--
Regards,
Ishan Jayawardena.
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