Re: qemu.org server bandwidth report (May 2021)

["Alex Bennée" <alex.bennee@linaro.org>]

Stefan Hajnoczi <stefanha@gmail.com> writes:

> On Mon, May 10, 2021 at 11:31 AM Daniel P. Berrangé <berrange@redhat.com> wrote:
>>
>> On Mon, May 10, 2021 at 10:49:19AM +0100, Stefan Hajnoczi wrote:
>>
>> > qemu.org bandwidth usage has been as follows:
>> > - Jan: 12.56 TB
>> > - Feb: 10.55 TB
>> > - Mar: 10.28 TB
>> > - Apr: 7.62 TB
>> >
>> > In May qemu.org has averaged 232.25 GB/day so far putting it on track
>> > for 7 TB total this month.
<snip>
>>
>> For the https:// URIs should we setup a HTTP redirect ?
>>
>> When git clones via https it fetches some specific paths which
>> I believe we have rules for in httpd conf:
>>
>>   ScriptAliasMatch "^/git/(.*\.git/(HEAD|info/refs))$" \
>>     /usr/libexec/git-core/git-http-backend/$1
>>   ScriptAliasMatch "^/git/(.*\.git/git-(upload|receive)-pack)$" \
>>     /usr/libexec/git-core/git-http-backend/$1
>>
>> If we set those URI path matches to send a HTTP 307 redirect
>> to gitlab, that would essentially kill off our git traffic on
>> qemu.org, while still allowing the qemu.org gitweb UI to
>> work normally. The downside is that people won't notice to
>> update their clone URIs. Still feels like an easy win and
>> we can easily remove the redirect if we use code 307.
>
> I remember there were concerns about warning messages that
> git-clone(1) prints when an HTTP redirect is encountered? If everyone
> is okay I can turn the git-http-backend(1) aliases into HTTP 307
> redirects to GitLab.
>
>> Third, qemu 4.2.0....
>>
>> I wonder why this is the most popular. Something must be linking
>> to this, as you would otherwise have to go out of your way to
>> search it out.
>>
>> Do we have any stats on the referrer URLs ?
>>
>> I wonder if there's some key page(s) that need updating ?
>>
>> If we're unlucky there might be some CI system that hardcoded
>> use of qemu 4.2.0 that's frequently pulling it.
>
> The majority of qemu-4.2.0.tar.xz downloads have the wget user agent
> and no referrer. The IP addresses don't have a clear pattern (there
> are many).

I've just checked my Gentoo box and I can see it pulls directly from:

  SRC_URI="https://download.qemu.org/${P}.tar.xz"

and the *9999* builds (HEAD, which I doubt many people use) points to:

  EGIT_REPO_URI="https://git.qemu.org/git/qemu.git"

but the lowest version is 5.2.0 and 6.0.0 is already in the repo so
these particular users probably are a minority.

However Google does point to a number of instructions online that have
wget and "qemu-4.2.0.tar.xz" in them. 

>
> Stefan


-- 
Alex Bennée