From: Duy Nguyen <pclouds@gmail.com>
To: Ben Peart <peartben@gmail.com>
Cc: Jeff King <peff@peff.net>, Junio C Hamano <gitster@pobox.com>,
Eric Sunshine <sunshine@sunshineco.com>,
Git Mailing List <git@vger.kernel.org>,
Ben Peart <benpeart@microsoft.com>
Subject: Re: [PATCH v1 1/2] reset: don't compute unstaged changes after reset when --quiet
Date: Thu, 18 Oct 2018 20:26:45 +0200 [thread overview]
Message-ID: <CACsJy8CvvZcQdxnZbu-FZmVm7wtMDLocjiMVURhvJ=NtuYgi9w@mail.gmail.com> (raw)
In-Reply-To: <5b4d46c2-ac0b-8a44-5e99-b0926ea764d3@gmail.com>
On Thu, Oct 18, 2018 at 8:18 PM Ben Peart <peartben@gmail.com> wrote:
> I actually started my effort to speed up reset by attempting to
> multi-thread refresh_index(). You can see a work in progress at:
>
> https://github.com/benpeart/git/pull/new/refresh-index-multithread-gvfs
>
> The patch doesn't always work as it is still not thread safe. When it
> works, it's great but I ran into to many difficulties trying to debug
> the remaining threading issues (even adding print statements would
> change the timing and the repro would disappear). It will take a lot of
> code review to discover and fix the remaining non-thread safe code paths.
>
> In addition, the optimized code path that takes advantage of fsmonitor,
> uses multiple threads, fscache, etc _already exists_ in preload_index().
> Trying to recreate all those optimizations in refresh_index() is (as I
> discovered) a daunting task.
Why not make refresh_index() run preload_index() first (or the
parallel lstat part to be precise), and only do the heavy
content-based refresh in single thread mode?
--
Duy
next prev parent reply other threads:[~2018-10-18 18:27 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-17 16:40 [PATCH v1 0/2] speed up git reset Ben Peart
2018-10-17 16:40 ` [PATCH v1 1/2] reset: don't compute unstaged changes after reset when --quiet Ben Peart
2018-10-17 18:14 ` Eric Sunshine
2018-10-17 18:22 ` Jeff King
2018-10-18 3:40 ` Junio C Hamano
2018-10-18 6:36 ` Jeff King
2018-10-18 18:15 ` Ben Peart
2018-10-18 18:26 ` Duy Nguyen [this message]
2018-10-18 19:03 ` Ben Peart
2018-10-19 0:34 ` Junio C Hamano
2018-10-17 16:40 ` [PATCH v1 2/2] reset: add new reset.quietDefault config setting Ben Peart
2018-10-17 18:19 ` Eric Sunshine
2018-10-17 18:23 ` Jeff King
2018-10-23 9:13 ` Ævar Arnfjörð Bjarmason
2018-10-23 18:11 ` Ben Peart
2018-10-23 20:02 ` Jeff King
2018-10-23 20:03 ` Ævar Arnfjörð Bjarmason
2018-10-24 15:48 ` Recommended configurations (was Re: [PATCH v1 2/2] reset: add new reset.quietDefault config setting) Derrick Stolee
2018-10-24 23:58 ` Jeff King
2018-10-25 4:09 ` Junio C Hamano
2018-10-19 16:12 ` [PATCH v2 0/3] speed up git reset Ben Peart
2018-10-19 16:12 ` [PATCH v2 1/3] reset: don't compute unstaged changes after reset when --quiet Ben Peart
2018-10-19 16:12 ` [PATCH v2 2/3] reset: add new reset.quiet config setting Ben Peart
2018-10-19 16:36 ` Eric Sunshine
2018-10-19 16:46 ` Jeff King
2018-10-19 17:10 ` Eric Sunshine
2018-10-19 17:11 ` Jeff King
2018-10-19 17:23 ` Ben Peart
2018-10-19 19:08 ` Jeff King
2018-10-22 5:04 ` Junio C Hamano
2018-10-19 17:11 ` Ben Peart
2018-10-19 16:12 ` [PATCH v2 3/3] reset: warn when refresh_index() takes more than 2 seconds Ben Peart
2018-10-22 13:18 ` [PATCH v3 0/3] speed up git reset Ben Peart
2018-10-22 13:18 ` [PATCH v3 1/3] reset: don't compute unstaged changes after reset when --quiet Ben Peart
2018-10-22 20:44 ` Johannes Schindelin
2018-10-22 22:07 ` Ben Peart
2018-10-23 8:53 ` Johannes Schindelin
2018-10-23 15:46 ` Duy Nguyen
2018-10-23 19:55 ` Johannes Schindelin
2018-10-22 13:18 ` [PATCH v3 2/3] reset: add new reset.quiet config setting Ben Peart
2018-10-22 14:45 ` Duy Nguyen
2018-10-23 18:47 ` Ben Peart
2018-10-24 2:56 ` Junio C Hamano
2018-10-24 7:21 ` Junio C Hamano
2018-10-24 14:54 ` Duy Nguyen
2018-10-25 1:12 ` Junio C Hamano
2018-10-24 14:49 ` Duy Nguyen
2018-10-22 19:13 ` Ramsay Jones
2018-10-22 20:06 ` Jeff King
2018-10-23 17:31 ` Ben Peart
2018-10-23 17:35 ` Jeff King
2018-10-22 13:18 ` [PATCH v3 3/3] reset: warn when refresh_index() takes more than 2 seconds Ben Peart
2018-10-23 0:23 ` Junio C Hamano
2018-10-23 17:12 ` Ben Peart
2018-10-23 19:04 ` [PATCH v4 0/3] speed up git reset Ben Peart
2018-10-23 19:04 ` [PATCH v4 1/3] reset: don't compute unstaged changes after reset when --quiet Ben Peart
2018-10-23 19:04 ` [PATCH v4 2/3] reset: add new reset.quiet config setting Ben Peart
2018-10-24 0:39 ` Ramsay Jones
2018-10-25 4:56 ` Junio C Hamano
2018-10-25 9:26 ` Junio C Hamano
2018-10-25 13:26 ` Ben Peart
2018-10-25 17:04 ` Ramsay Jones
2018-10-23 19:04 ` [PATCH v4 3/3] reset: warn when refresh_index() takes more than 2 seconds Ben Peart
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