From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ramsay Jones <ramsay@ramsayjones.plus.com>
Subject: Re: [PATCHv2 0/8] Expose the submodule parallelism to the user
Date: Thu, 29 Oct 2015 23:50:57 +0000
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Cc: "git@vger.kernel.org" <git@vger.kernel.org>,
	Jacob Keller <jacob.keller@gmail.com>,
	Jeff King <peff@peff.net>, Junio C Hamano <gitster@pobox.com>,
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	Eric Sunshine <ericsunshine@gmail.com>
To: Stefan Beller <sbeller@google.com>
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On 29/10/15 15:51, Stefan Beller wrote:
> On Thu, Oct 29, 2015 at 6:19 AM, Ramsay Jones
> <ramsay@ramsayjones.plus.com> wrote:
> 
>> Hmm, is there a way to _not_ fetch in parallel (override the
>> config) from the command line for a given command?
>>
>> ATB,
>> Ramsay Jones
> 
> git config submodule.jobs 42
> git <foo> --jobs 1 # should run just one task, despite having 42 configured

Heh, yes ... I didn't pose the question quite right ...
> 
> It does use the parallel processing machinery though, but with a maximum of
> one subcommand being spawned. Is that what you're asking?

... but, despite that, you correctly inferred what I was really
asking about! :)

I was just wondering what overhead the parallel processing machinery
adds to the original 'non-parallel' code path (for the j=1 case).
I suspect the answer is 'not much', but that's just a guess.
Have you measured it? What happens if there is only a single
submodule to fetch?

ATB,
Ramsay Jones