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Am 23.03.2011 20:47, schrieb Donnie Berkholz: |
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> On 14:43 Wed 23 Mar , Rich Freeman wrote: |
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>> On Wed, Mar 23, 2011 at 1:44 PM, Michael Seifert |
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>> <michael.seifert@×××.net> wrote: |
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>>> I cannot tell you at this stage, sorry. The real loss for steps 3/4 |
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>>> has to be measured after the implementation. The problem with the |
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>>> estimates here is that the assembled ebuilds also contain the |
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>>> sources and the eclasses. Maybe I will do some number crunching on a |
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>>> few selected ebuilds. |
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>> |
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>> A more critical factor could be the dependencies - unless we otherwise |
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>> cache them. To install a package you need to walk the dependency tree |
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>> (well, at least until you hit installed packages with the right USE |
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>> flags). That requires one set of fetches for each level you traverse, |
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>> and that means at least one round trip per level. |
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You are right. I only considered the size improvements, not the changes |
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to speed. |
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Anyway, is the calculation of dependencies handled differently in |
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current portage versions? |
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> |
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> Perhaps both of you need to take a quick stroll through the metadata |
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> cache (/usr/portage/metadata/cache/) and check out what those files look |
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> like. =) |
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> |
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> Here's a description of the format from our Package Manager |
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> Specification (PMS): |
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> |
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> http://dev.gentoo.org/~ulm/pms/4/pms.html#x1-16000014 |
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> |
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I already did, but the documentation helps a lot, thanks. This way one |
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doesn't have to match the digits in the metadata (e.g. EAPI version) |
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with those in the ebuild to know what they are good for :) |
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