Re: [ANNOUNCE] Git Merge Contributors Summit, April 8th, Paris

From: Stefan Beller <sbeller@google.com>
Date: Apr 7, 2015, 15:53 UTC
Message-ID: <CAGZ79kYLXk8bX2inGANzB_2rkj_FWN_q=b6AVh_jHssk+PHOdA@mail.gmail.com>
In-Reply-To: <CACBZZX5mZgHxicZGTGsgAxBCZuRymrariAeHK0vf5+Qs1EzA2A@mail.gmail.com>

On Tue, Apr 7, 2015 at 6:55 AM, Ævar Arnfjörð Bjarmason <avarab@gmail.com> wrote:

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> On Mon, Apr 6, 2015 at 10:28 PM, Stefan Beller <sbeller@google.com> wrote:
>> I am interested in discussing the git pack protocol v2.
>> (I have been thinking about that for a while now,
>> though not sharing a lot on the mailing list, so feedback is
>> somewhat limited. :( )
>
> I'm keen to talk about the new protocol and other scaling issues I
> raised in the recent "Git Scaling: What factors most affect Git
> performance for a large repo?" thread. Although from my testing the
> main problems in performance are the local pack-refs file &
> reachability checks, mostly not the protocol itself.

Yes, the new protocol might not be the most pressing part for scaling up
the repository, but I feel like it's the most challenging and fun part for me
when talking about scaling issues. ;)
e.g. if you fetch git.git (and you're up to date!), the git protocol
already eats
130kB of bandwidth, so in case you're on your mobile expensive data plan
you'll hate the inefficiency, it was measured with
    git ls-remote git://github.com/gitster/git |wc -c
    132048
or as a gerrit developer:
    git ls-remote https://gerrit.googlesource.com/gerrit |wc -c
     2108657
2MB, That's crazy!

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>
> At the risk of using this list + the venue for soliciting I also want
> to mention that my employer is willing to pay someone on a contract
> basis to work on Git scalability issues, given the right person etc.
> etc. So if someone's at the conference is interested in that I'd be
> keen to talk to you.

I'm fine with soliciting here on the list for a good cause. (I was touring Paris yesterday and was near the Eiffel tower and within 15 minutes, there were 4 tries of unsolicited advertising/begging/ [tourist->money conversion scheme])