From: Ramsay Jones <ramsay@ramsayjones.plus.com>
To: Stefan Beller <sbeller@google.com>
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>,
Jonathan Nieder <jrnieder@gmail.com>,
Johannes Schindelin <johannes.schindelin@gmail.com>,
Jens Lehmann <Jens.Lehmann@web.de>,
Eric Sunshine <ericsunshine@gmail.com>
Subject: Re: [PATCHv2 0/8] Expose the submodule parallelism to the user
Date: Thu, 29 Oct 2015 23:50:57 +0000 [thread overview]
Message-ID: <5632B0E1.8040309@ramsayjones.plus.com> (raw)
In-Reply-To: <CAGZ79kYXrOFDqs5c-OYG2vRO9GY_aoD_GU1=TkRtOMaGC_GowA@mail.gmail.com>
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
next prev parent reply other threads:[~2015-10-29 23:51 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-27 18:15 [PATCH 0/9] Expose the submodule parallelism to the user Stefan Beller
2015-10-27 18:15 ` [PATCH 1/9] submodule-config: "goto" removal in parse_config() Stefan Beller
2015-10-27 21:26 ` Jonathan Nieder
2015-10-27 21:39 ` Junio C Hamano
2015-10-27 18:15 ` [PATCH 2/9] submodule config: keep update strategy around Stefan Beller
2015-10-27 18:15 ` [PATCH 3/9] run_processes_parallel: Add output to tracing messages Stefan Beller
2015-10-27 18:15 ` [PATCH 4/9] git submodule update: have a dedicated helper for cloning Stefan Beller
2015-10-27 18:15 ` [PATCH 5/9] submodule update: expose parallelism to the user Stefan Beller
2015-10-27 20:59 ` Junio C Hamano
2015-10-28 21:40 ` Stefan Beller
2015-10-28 22:20 ` Junio C Hamano
2015-10-27 18:15 ` [PATCH 6/9] clone: allow an explicit argument for parallel submodule clones Stefan Beller
2015-10-27 20:57 ` Junio C Hamano
2015-10-28 20:50 ` Stefan Beller
2015-10-27 18:15 ` [PATCH 7/9] submodule config: remove name_and_item_from_var Stefan Beller
2015-10-27 18:15 ` [PATCH 8/9] submodule-config: parse_config Stefan Beller
2015-10-27 18:15 ` [PATCH 9/9] fetching submodules: Respect `submodule.jobs` config option Stefan Beller
2015-10-27 21:00 ` Junio C Hamano
2015-10-27 19:12 ` [PATCH 0/9] Expose the submodule parallelism to the user Junio C Hamano
2015-10-28 23:21 ` [PATCHv2 0/8] " Stefan Beller
2015-10-28 23:21 ` [PATCHv2 1/8] run_processes_parallel: Add output to tracing messages Stefan Beller
2015-10-30 1:10 ` Eric Sunshine
2015-10-30 17:32 ` Stefan Beller
2015-10-28 23:21 ` [PATCHv2 2/8] submodule config: keep update strategy around Stefan Beller
2015-10-30 1:14 ` Eric Sunshine
2015-10-30 17:38 ` Stefan Beller
2015-10-30 18:16 ` Eric Sunshine
2015-10-30 18:25 ` Stefan Beller
2015-10-28 23:21 ` [PATCHv2 3/8] submodule config: remove name_and_item_from_var Stefan Beller
2015-10-30 1:23 ` Eric Sunshine
2015-10-30 18:37 ` Stefan Beller
2015-10-28 23:21 ` [PATCHv2 4/8] submodule-config: parse_config Stefan Beller
2015-10-30 1:53 ` Eric Sunshine
2015-10-30 19:29 ` Stefan Beller
2015-10-28 23:21 ` [PATCHv2 5/8] fetching submodules: Respect `submodule.jobs` config option Stefan Beller
2015-10-30 2:17 ` Eric Sunshine
2015-10-28 23:21 ` [PATCHv2 6/8] git submodule update: have a dedicated helper for cloning Stefan Beller
2015-10-29 22:34 ` Junio C Hamano
2015-10-28 23:21 ` [PATCHv2 7/8] submodule update: expose parallelism to the user Stefan Beller
2015-10-28 23:21 ` [PATCHv2 8/8] clone: allow an explicit argument for parallel submodule clones Stefan Beller
2015-11-01 8:58 ` Eric Sunshine
2015-10-29 13:19 ` [PATCHv2 0/8] Expose the submodule parallelism to the user Ramsay Jones
2015-10-29 15:51 ` Stefan Beller
2015-10-29 17:23 ` Junio C Hamano
2015-10-29 17:30 ` Stefan Beller
2015-10-29 23:50 ` Ramsay Jones [this message]
2015-11-03 19:41 ` Stefan Beller
2015-10-29 20:12 ` Junio C Hamano
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