Bug#168710: marked as done (apt: Download time for apt-get update is based on current file only)
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and subject line Bug#168710: apt: Download time for apt-get update is based on current file only
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From: Thomas Koenig <Thomas.Koenig@online.de>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: apt: Download time for apt-get update is based on current file only
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Package: apt
Version: 0.5.4
Severity: minor
When doing an "apt-get update", the estimator is pretty wildly off
because it only takes the file that's currently being downloaded
into account. This looks like this:
Hit ftp://non-us.debian.org unstable/non-US/non-free Sources
Get:6 ftp://non-us.debian.org unstable/non-US/non-free Release [95B]
Get:7 ftp://ftp.debian.org unstable/main Packages [2244kB]
99% [7 Packages 2235814/2244kB 99%] 6460B/s 1s
... with the sources lists still in need for a download.
-- System Information:
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux meiner 2.4.18 #4 Mon Jun 17 20:14:20 CEST 2002 i686
Locale: LANG=C, LC_CTYPE=de_DE@euro
Versions of packages apt depends on:
ii libc6 2.3.1-3 GNU C Library: Shared libraries an
ii libstdc++2.10-glibc2.2 1:2.95.4-12 The GNU stdc++ library
-- no debconf information
---------------------------------------
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>From doogie@debian.org Mon Nov 11 14:03:57 2002
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Date: Mon, 11 Nov 2002 14:03:26 -0600 (CST)
From: Adam Heath <doogie@debian.org>
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To: Thomas Koenig <Thomas.Koenig@online.de>, <168710-done@bugs.debian.org>
Subject: Re: Bug#168710: apt: Download time for apt-get update is based on
current file only
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On Mon, 11 Nov 2002, Thomas Koenig wrote:
> When doing an "apt-get update", the estimator is pretty wildly off
> because it only takes the file that's currently being downloaded
> into account. This looks like this:
>
> Hit ftp://non-us.debian.org unstable/non-US/non-free Sources
> Get:6 ftp://non-us.debian.org unstable/non-US/non-free Release [95B]
> Get:7 ftp://ftp.debian.org unstable/main Packages [2244kB]
> 99% [7 Packages 2235814/2244kB 99%] 6460B/s 1s
>
> ... with the sources lists still in need for a download.
This is because apt doesn't know the size of subsequent files still to come,
as it has not yet gotten a response from the server.
Apt sends multiple requests at once(pipelining), but the responses must come
in the same order. So, what you want can't be done.
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