From: "Martin Ågren" <martin.agren@gmail.com>
To: Matheus Tavares <matheus.bernardino@usp.br>
Cc: Git Mailing List <git@vger.kernel.org>,
Jeff Hostetler <jeffhost@microsoft.com>,
Christian Couder <chriscool@tuxfamily.org>,
Jeff King <peff@peff.net>, Thomas Gummerer <t.gummerer@gmail.com>,
Elijah Newren <newren@gmail.com>
Subject: Re: [PATCH v2 11/19] parallel-checkout: make it truly parallel
Date: Tue, 29 Sep 2020 21:52:19 +0200 [thread overview]
Message-ID: <CAN0heSoJvkZ+gvQwZMPW5Q0HqB0mOUnVqXiOqnPk48cDxMzAqw@mail.gmail.com> (raw)
In-Reply-To: <991169488b17e492c6d2c2f212267a66693aa7ec.1600814153.git.matheus.bernardino@usp.br>
Hi Matheus,
On Wed, 23 Sep 2020 at 00:53, Matheus Tavares <matheus.bernardino@usp.br> wrote:
> --- a/Documentation/config/checkout.txt
> +++ b/Documentation/config/checkout.txt
> @@ -16,3 +16,24 @@ will checkout the '<something>' branch on another remote,
> and by linkgit:git-worktree[1] when 'git worktree add' refers to a
> remote branch. This setting might be used for other checkout-like
> commands or functionality in the future.
> +
> +checkout.workers::
> + The number of parallel workers to use when updating the working tree.
> + The default is one, i.e. sequential execution. If set to a value less
> + than one, Git will use as many workers as the number of logical cores
> + available. This setting and checkout.thresholdForParallelism affect all
If you end up rerolling this patch series for other reasons, you might
want to consider using `backticks` around
`checkout.thresholdForParallelism` so that it gets typeset as monospace.
> + commands that perform checkout. E.g. checkout, switch, clone, reset,
> + sparse-checkout, read-tree, etc.
Similarly here. Or perhaps go for "linkgit:git-checkout[1],
linkgit:git-switch[1]" etc.
BTW, as far as ".e.g.," goes, this list looks quite long. :) I almost
get the feeling you've made it fairly exhaustive and added the "e.g.,"
more as future proofing than anything else. I don't think anyone would
complain if you left out, say, the plumbing `git read-tree` from the list.
> +Note: parallel checkout usually delivers better performance for repositories
> +located on SSDs or over NFS. For repositories on spinning disks and/or machines
> +with a small number of cores, the default sequential checkout often performs
> +better. The size and compression level of a repository might also influence how
> +well the parallel version performs.
> +
> +checkout.thresholdForParallelism::
Sorry if this has already been discussed, but this "For" looks somewhat
odd. Basically every config knob is "somethingForSomething". ;-) Could
this be `checkout.parallelismThreshold`?
> + When running parallel checkout with a small number of files, the cost
> + of subprocess spawning and inter-process communication might outweigh
> + the parallelization gains. This setting allows to define the minimum
> + number of files for which parallel checkout should be attempted. The
> + default is 100.
Martin
next prev parent reply other threads:[~2020-09-29 19:52 UTC|newest]
Thread overview: 154+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-10 21:33 [RFC PATCH 00/21] [RFC] Parallel checkout Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 01/21] convert: make convert_attrs() and convert structs public Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 02/21] convert: add [async_]convert_to_working_tree_ca() variants Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 03/21] convert: add get_stream_filter_ca() variant Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 04/21] convert: add conv_attrs classification Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 05/21] entry: extract a header file for entry.c functions Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 06/21] entry: make fstat_output() and read_blob_entry() public Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 07/21] entry: extract cache_entry update from write_entry() Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 08/21] entry: move conv_attrs lookup up to checkout_entry() Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 09/21] entry: add checkout_entry_ca() which takes preloaded conv_attrs Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 10/21] unpack-trees: add basic support for parallel checkout Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 11/21] parallel-checkout: make it truly parallel Matheus Tavares
2020-08-19 21:34 ` Jeff Hostetler
2020-08-20 1:33 ` Matheus Tavares Bernardino
2020-08-20 14:39 ` Jeff Hostetler
2020-08-10 21:33 ` [RFC PATCH 12/21] parallel-checkout: add configuration options Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 13/21] parallel-checkout: support progress displaying Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 14/21] make_transient_cache_entry(): optionally alloc from mem_pool Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 15/21] builtin/checkout.c: complete parallel checkout support Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 16/21] checkout-index: add " Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 17/21] parallel-checkout: avoid stat() calls in workers Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 18/21] entry: use is_dir_sep() when checking leading dirs Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 19/21] symlinks: make has_dirs_only_path() track FL_NOENT Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 20/21] parallel-checkout: create leading dirs in workers Matheus Tavares
2020-08-10 21:33 ` [RFC PATCH 21/21] parallel-checkout: skip checking the working tree on clone Matheus Tavares
2020-08-12 16:57 ` [RFC PATCH 00/21] [RFC] Parallel checkout Jeff Hostetler
2020-09-22 22:49 ` [PATCH v2 00/19] Parallel Checkout (part I) Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 01/19] convert: make convert_attrs() and convert structs public Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 02/19] convert: add [async_]convert_to_working_tree_ca() variants Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 03/19] convert: add get_stream_filter_ca() variant Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 04/19] convert: add conv_attrs classification Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 05/19] entry: extract a header file for entry.c functions Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 06/19] entry: make fstat_output() and read_blob_entry() public Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 07/19] entry: extract cache_entry update from write_entry() Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 08/19] entry: move conv_attrs lookup up to checkout_entry() Matheus Tavares
2020-10-01 15:53 ` Jeff Hostetler
2020-10-01 15:59 ` Jeff Hostetler
2020-09-22 22:49 ` [PATCH v2 09/19] entry: add checkout_entry_ca() which takes preloaded conv_attrs Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 10/19] unpack-trees: add basic support for parallel checkout Matheus Tavares
2020-10-05 6:17 ` [PATCH] parallel-checkout: drop unused checkout state parameter Jeff King
2020-10-05 13:13 ` Matheus Tavares Bernardino
2020-10-05 13:45 ` Jeff King
2020-09-22 22:49 ` [PATCH v2 11/19] parallel-checkout: make it truly parallel Matheus Tavares
2020-09-29 19:52 ` Martin Ågren [this message]
2020-09-30 14:02 ` Matheus Tavares Bernardino
2020-09-22 22:49 ` [PATCH v2 12/19] parallel-checkout: support progress displaying Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 13/19] make_transient_cache_entry(): optionally alloc from mem_pool Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 14/19] builtin/checkout.c: complete parallel checkout support Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 15/19] checkout-index: add " Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 16/19] parallel-checkout: add tests for basic operations Matheus Tavares
2020-10-20 1:35 ` Jonathan Nieder
2020-10-20 2:55 ` Taylor Blau
2020-10-20 13:18 ` Matheus Tavares Bernardino
2020-10-20 19:09 ` Junio C Hamano
2020-10-20 3:18 ` Matheus Tavares Bernardino
2020-10-20 4:16 ` Jonathan Nieder
2020-10-20 19:14 ` Junio C Hamano
2020-09-22 22:49 ` [PATCH v2 17/19] parallel-checkout: add tests related to clone collisions Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 18/19] parallel-checkout: add tests related to .gitattributes Matheus Tavares
2020-09-22 22:49 ` [PATCH v2 19/19] ci: run test round with parallel-checkout enabled Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 00/19] Parallel Checkout (part I) Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 01/19] convert: make convert_attrs() and convert structs public Matheus Tavares
2020-10-29 23:40 ` Junio C Hamano
2020-10-30 17:01 ` Matheus Tavares Bernardino
2020-10-30 17:38 ` Junio C Hamano
2020-10-29 2:14 ` [PATCH v3 02/19] convert: add [async_]convert_to_working_tree_ca() variants Matheus Tavares
2020-10-29 23:48 ` Junio C Hamano
2020-10-29 2:14 ` [PATCH v3 03/19] convert: add get_stream_filter_ca() variant Matheus Tavares
2020-10-29 23:51 ` Junio C Hamano
2020-10-29 2:14 ` [PATCH v3 04/19] convert: add conv_attrs classification Matheus Tavares
2020-10-29 23:53 ` Junio C Hamano
2020-10-29 2:14 ` [PATCH v3 05/19] entry: extract a header file for entry.c functions Matheus Tavares
2020-10-30 21:36 ` Junio C Hamano
2020-10-29 2:14 ` [PATCH v3 06/19] entry: make fstat_output() and read_blob_entry() public Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 07/19] entry: extract cache_entry update from write_entry() Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 08/19] entry: move conv_attrs lookup up to checkout_entry() Matheus Tavares
2020-10-30 21:58 ` Junio C Hamano
2020-10-29 2:14 ` [PATCH v3 09/19] entry: add checkout_entry_ca() which takes preloaded conv_attrs Matheus Tavares
2020-10-30 22:02 ` Junio C Hamano
2020-10-29 2:14 ` [PATCH v3 10/19] unpack-trees: add basic support for parallel checkout Matheus Tavares
2020-11-02 19:35 ` Junio C Hamano
2020-11-03 3:48 ` Matheus Tavares Bernardino
2020-10-29 2:14 ` [PATCH v3 11/19] parallel-checkout: make it truly parallel Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 12/19] parallel-checkout: support progress displaying Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 13/19] make_transient_cache_entry(): optionally alloc from mem_pool Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 14/19] builtin/checkout.c: complete parallel checkout support Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 15/19] checkout-index: add " Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 16/19] parallel-checkout: add tests for basic operations Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 17/19] parallel-checkout: add tests related to clone collisions Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 18/19] parallel-checkout: add tests related to .gitattributes Matheus Tavares
2020-10-29 2:14 ` [PATCH v3 19/19] ci: run test round with parallel-checkout enabled Matheus Tavares
2020-10-29 19:48 ` [PATCH v3 00/19] Parallel Checkout (part I) Junio C Hamano
2020-10-30 15:58 ` Jeff Hostetler
2020-11-04 20:32 ` [PATCH v4 " Matheus Tavares
2020-11-04 20:33 ` [PATCH v4 01/19] convert: make convert_attrs() and convert structs public Matheus Tavares
2020-12-05 10:40 ` Christian Couder
2020-12-05 21:53 ` Matheus Tavares Bernardino
2020-11-04 20:33 ` [PATCH v4 02/19] convert: add [async_]convert_to_working_tree_ca() variants Matheus Tavares
2020-12-05 11:10 ` Christian Couder
2020-12-05 22:20 ` Matheus Tavares Bernardino
2020-11-04 20:33 ` [PATCH v4 03/19] convert: add get_stream_filter_ca() variant Matheus Tavares
2020-12-05 11:45 ` Christian Couder
2020-11-04 20:33 ` [PATCH v4 04/19] convert: add conv_attrs classification Matheus Tavares
2020-12-05 12:07 ` Christian Couder
2020-12-05 22:08 ` Matheus Tavares Bernardino
2020-11-04 20:33 ` [PATCH v4 05/19] entry: extract a header file for entry.c functions Matheus Tavares
2020-12-06 8:31 ` Christian Couder
2020-11-04 20:33 ` [PATCH v4 06/19] entry: make fstat_output() and read_blob_entry() public Matheus Tavares
2020-11-04 20:33 ` [PATCH v4 07/19] entry: extract cache_entry update from write_entry() Matheus Tavares
2020-12-06 8:53 ` Christian Couder
2020-11-04 20:33 ` [PATCH v4 08/19] entry: move conv_attrs lookup up to checkout_entry() Matheus Tavares
2020-12-06 9:35 ` Christian Couder
2020-12-07 13:52 ` Matheus Tavares Bernardino
2020-11-04 20:33 ` [PATCH v4 09/19] entry: add checkout_entry_ca() which takes preloaded conv_attrs Matheus Tavares
2020-12-06 10:02 ` Christian Couder
2020-12-07 16:47 ` Matheus Tavares Bernardino
2020-11-04 20:33 ` [PATCH v4 10/19] unpack-trees: add basic support for parallel checkout Matheus Tavares
2020-12-06 11:36 ` Christian Couder
2020-12-07 19:06 ` Matheus Tavares Bernardino
2020-11-04 20:33 ` [PATCH v4 11/19] parallel-checkout: make it truly parallel Matheus Tavares
2020-12-16 22:31 ` Emily Shaffer
2020-12-17 15:00 ` Matheus Tavares Bernardino
2020-11-04 20:33 ` [PATCH v4 12/19] parallel-checkout: support progress displaying Matheus Tavares
2020-11-04 20:33 ` [PATCH v4 13/19] make_transient_cache_entry(): optionally alloc from mem_pool Matheus Tavares
2020-11-04 20:33 ` [PATCH v4 14/19] builtin/checkout.c: complete parallel checkout support Matheus Tavares
2020-11-04 20:33 ` [PATCH v4 15/19] checkout-index: add " Matheus Tavares
2020-11-04 20:33 ` [PATCH v4 16/19] parallel-checkout: add tests for basic operations Matheus Tavares
2020-11-04 20:33 ` [PATCH v4 17/19] parallel-checkout: add tests related to clone collisions Matheus Tavares
2020-11-04 20:33 ` [PATCH v4 18/19] parallel-checkout: add tests related to .gitattributes Matheus Tavares
2020-11-04 20:33 ` [PATCH v4 19/19] ci: run test round with parallel-checkout enabled Matheus Tavares
2020-12-16 14:50 ` [PATCH v5 0/9] Parallel Checkout (part I) Matheus Tavares
2020-12-16 14:50 ` [PATCH v5 1/9] convert: make convert_attrs() and convert structs public Matheus Tavares
2020-12-16 14:50 ` [PATCH v5 2/9] convert: add [async_]convert_to_working_tree_ca() variants Matheus Tavares
2020-12-16 14:50 ` [PATCH v5 3/9] convert: add get_stream_filter_ca() variant Matheus Tavares
2020-12-16 14:50 ` [PATCH v5 4/9] convert: add classification for conv_attrs struct Matheus Tavares
2020-12-16 14:50 ` [PATCH v5 5/9] entry: extract a header file for entry.c functions Matheus Tavares
2020-12-16 14:50 ` [PATCH v5 6/9] entry: make fstat_output() and read_blob_entry() public Matheus Tavares
2020-12-16 14:50 ` [PATCH v5 7/9] entry: extract update_ce_after_write() from write_entry() Matheus Tavares
2020-12-16 14:50 ` [PATCH v5 8/9] entry: move conv_attrs lookup up to checkout_entry() Matheus Tavares
2020-12-16 14:50 ` [PATCH v5 9/9] entry: add checkout_entry_ca() taking preloaded conv_attrs Matheus Tavares
2020-12-16 15:27 ` [PATCH v5 0/9] Parallel Checkout (part I) Christian Couder
2020-12-17 1:11 ` Junio C Hamano
2021-03-23 14:19 ` [PATCH v6 0/9] Parallel Checkout (part 1) Matheus Tavares
2021-03-23 14:19 ` [PATCH v6 1/9] convert: make convert_attrs() and convert structs public Matheus Tavares
2021-03-23 14:19 ` [PATCH v6 2/9] convert: add [async_]convert_to_working_tree_ca() variants Matheus Tavares
2021-03-23 14:19 ` [PATCH v6 3/9] convert: add get_stream_filter_ca() variant Matheus Tavares
2021-03-23 14:19 ` [PATCH v6 4/9] convert: add classification for conv_attrs struct Matheus Tavares
2021-03-23 14:19 ` [PATCH v6 5/9] entry: extract a header file for entry.c functions Matheus Tavares
2021-03-23 14:19 ` [PATCH v6 6/9] entry: make fstat_output() and read_blob_entry() public Matheus Tavares
2021-03-23 14:19 ` [PATCH v6 7/9] entry: extract update_ce_after_write() from write_entry() Matheus Tavares
2021-03-23 14:19 ` [PATCH v6 8/9] entry: move conv_attrs lookup up to checkout_entry() Matheus Tavares
2021-03-23 14:19 ` [PATCH v6 9/9] entry: add checkout_entry_ca() taking preloaded conv_attrs Matheus Tavares
2021-03-23 17:34 ` [PATCH v6 0/9] Parallel Checkout (part 1) Junio C Hamano
2020-10-01 16:42 ` [RFC PATCH 00/21] [RFC] Parallel checkout Jeff Hostetler
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