Re: [PATCHv3 00/11] Expose the submodule parallelism to the user

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On Wed, Nov 4, 2015 at 9:54 AM, Junio C Hamano <gitster@xxxxxxxxx> wrote:
> Stefan Beller <sbeller@xxxxxxxxxx> writes:
>
>> Where does it apply?
>> ---
>> This series applies on top of d075d2604c0f92045caa8d5bb6ab86cf4921a4ae (Merge
>> branch 'rs/daemon-plug-child-leak' into sb/submodule-parallel-update) and replaces
>> the previous patches in sb/submodule-parallel-update
>>
>> What does it do?
>> ---
>> This series should finish the on going efforts of parallelizing
>> submodule network traffic. The patches contain tests for clone,
>> fetch and submodule update to use the actual parallelism both via
>> command line as well as a configured option. I decided to go with
>> "submodule.jobs" for all three for now.
>
> The order of patches and where the series builds makes me suspect
> that I have been expecting too much from the "parallel-fetch" topic.
>
> I've been hoping that it would be useful for the project as a whole
> to polish the other topic and make it available to wider audience
> sooner by itself (both from "end users get improved Git early"
> aspect and from "the core machinery to be reused in follow-up
> improvements are made closer to perfection sooner" perspective).  So
> I've been expecting that "Let's fix it on Windows" change directly
> on top of sb/submodule-parallel-fetch to make that topic usable
> before everything else.

I can resend the patches on top of sb/submodule-parallel-fetch
(though looking at sb/submodule-parallel-fetch..d075d2604c0f920
[Merge branch 'rs/daemon-plug-child-leak' into sb/submodule-parallel-update]
I don't expect conflicts, so it would be a verbatim resend)


> Other patches in this series may require
> the child_process_cleanup() change, so they may be applied on top of
> the merge between sb/submodule-parallel-fetch (updated for Windows)
> and rs/daemon-plug-child-leak topic.

I assumed the rs/daemon-plug-child-leak topic is no feature, but cleanup.
Which is why I would have expected a sb/submodule-parallel-fetch-for-windows
pointing at maybe the third patch of the series on top of
rs/daemon-plug-child-leak

>
> That does not seem to be what's happening here (note: I am not
> complaining; I am just trying to make sure expectation matches
> reality).  Am I reading you correctly?

I really wanted to send out just one series, my bad.
The ordering made sense to me (first the run-command related fixes
and then the new features in later patches)

>
> I think sb/submodule-parallel-fetch + sb/submodule-parallel-update
> as a single topic would need more time to mature to be in a tagged
> release than we have in the remainder of this cycle.

I agree on that.

>  It is likely
> that the former topic has a chance to get rebased after 2.7 happens.
> And that would allow us to (1) use the child_process_cleanup() from
> get-go instead of _deinit and to (2) get the machinery right both
> for UNIX and Windows from get-go.  Which would make the result
> easier to understand.  As this is one of the more important areas,
> it matters to keep the resulting code and the rationale behind it
> understandable by reading "log --reverse -p".

So you are saying that reading the Windows cleanup patch
before the s/deinit/clear/ Patch by Rene makes it way easier to understand?
Which is why you would prefer another history. (Merging an updated
sb/submodule-parallel-fetch again to  rs/daemon-plug-child-leak or even
sb/submodule-parallel-update)

Thanks,
Stefan
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