Tuesday, 23 July 2013

Re: Source packages appropriate by default?

Perhaps we have two issues here:
- the download during installs or first index update is 6-7MB extra,
which makes a real difference when installing lots of computers
- downloads from security.ubuntu.com being slow (eg 1-5KB/s) as it's >500ms away

The 20% additional download due to sources [1] would help both issues,
but perhaps of bigger impact, trusting the country-level mirror for
the security updates?


--- [1]

Get:1 http://security.ubuntu.com precise-security Release.gpg [198 B]
Get:2 http://security.ubuntu.com precise-security Release [49.6 kB]
Get:3 http://security.ubuntu.com precise-security/main Sources [83.5 kB]
Get:4 http://security.ubuntu.com precise-security/restricted Sources [2494 B]
Get:5 http://security.ubuntu.com precise-security/universe Sources [27.1 kB]
Get:6 http://security.ubuntu.com precise-security/multiverse Sources [1383 B]
Get:7 http://security.ubuntu.com precise-security/main amd64 Packages [296 kB]
Get:8 http://security.ubuntu.com precise-security/restricted amd64
Packages [4627 B]
Get:9 http://security.ubuntu.com precise-security/universe amd64
Packages [77.7 kB]
Get:10 http://security.ubuntu.com precise-security/multiverse amd64
Packages [2186 B]
Get:11 http://security.ubuntu.com precise-security/main i386 Packages [311 kB]
Get:12 http://security.ubuntu.com precise-security/restricted i386
Packages [4620 B]
Get:13 http://security.ubuntu.com precise-security/universe i386
Packages [80.5 kB]
Get:14 http://security.ubuntu.com precise-security/multiverse i386
Packages [2371 B]
Get:15 http://security.ubuntu.com precise-security/main TranslationIndex [74 B]
Get:16 http://security.ubuntu.com precise-security/multiverse
TranslationIndex [71 B]
Get:17 http://security.ubuntu.com precise-security/restricted
TranslationIndex [72 B]
Get:18 http://security.ubuntu.com precise-security/universe
TranslationIndex [73 B]

On 24 July 2013 10:46, Robie Basak <robie.basak@ubuntu.com> wrote:
> On Tue, Jul 23, 2013 at 09:31:15PM -0400, Scott Kitterman wrote:
>> Before we run off and expend a lot more effort on this, I'd like to
>> see something other than handwaving that this is really is a
>> significant issue.
> [size comparisions snipped]
> My concern is latency, not size. How many round trips will we save this
> way? For cloud images using Amazon S3 mirrors, for example, each request
> is quite a bit slower AIUI, and apt-get doesn't currently support
> concurrent requests to a single server.
> This is a pain for instances that start up with cloud-init and
> immediately have to update sources and install things before they can
> become functional. It'd be nice to see the delay from "juju deploy" to
> having a live service running get shorter. Same for "juju add-unit".
> Admittedly an alternative means to achieve this could be to have
> cloud-init remove the deb-src lines first, but it seems a shame to leave
> others behind if this really does improve things.
> I agree that I should come up with actual figures before pushing ahead
> for this reason.
> --
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Daniel J Blueman

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