From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: Carlos Pita <carlosjosepita@gmail.com>
Cc: "“git@vger.kernel.org”" <git@vger.kernel.org>
Subject: Re: Index files autocompletion too slow in big repositories (w / suggestion for improvement)
Date: Sat, 15 Apr 2017 00:33:44 +0200 [thread overview]
Message-ID: <CACBZZX7Ajf1c9YKP=MO0T9SV7d0-XZsT=RthJocqZw4_TcCcQw@mail.gmail.com> (raw)
In-Reply-To: <CAELgYhfwwLZXGN9yHZ04koDwGn3=KbuJOxhLM-+PCbumTmMunw@mail.gmail.com>
On Sat, Apr 15, 2017 at 12:08 AM, Carlos Pita <carlosjosepita@gmail.com> wrote:
> This is much faster (below 0.1s):
>
> __git_index_files ()
> {
> local dir="$(__gitdir)" root="${2-.}" file;
> if [ -d "$dir" ]; then
> __git_ls_files_helper "$root" "$1" | \
> sed -r 's@/.*@@' | uniq | sort | uniq
> fi
> }
>
> time __git_index_files
>
> real 0m0.075s
> user 0m0.083s
> sys 0m0.010s
>
> Most of the improvement is due to the simpler, non-grouping, regex.
> Since I expect most of the common prefixes to arrive consecutively,
> running uniq before sort also improves things a bit. I'm not removing
> leading double quotes anymore (this isn't being done by the current
> version, anyway) but this doesn't seem to hurt.
>
> Despite the dependence on sed this is ten times faster than the
> original, maybe an option to enable fast index completion or something
> like that might be desirable.
>
> Best regards
It's fine to depend on sed, these shell-scripts are POSIX compatible,
and so is sed, we use sed in a lot of the built-in shellscripts.
I think you should submit this as a patch, see Documentation/SubmittingPatches.
next prev parent reply other threads:[~2017-04-14 22:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-14 20:06 Index files autocompletion too slow in big repositories (w / suggestion for improvement) Carlos Pita
2017-04-14 22:08 ` Carlos Pita
2017-04-14 22:33 ` Ævar Arnfjörð Bjarmason [this message]
2017-04-15 1:37 ` Jacob Keller
2017-04-15 7:52 ` Junio C Hamano
2017-04-15 11:59 ` Johannes Sixt
2017-04-16 0:31 ` Jacob Keller
2017-04-17 4:05 ` Junio C Hamano
2017-04-17 8:03 ` Johannes Sixt
2017-04-15 12:30 ` Johannes Sixt
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