From: Michael Albinus <michael.albinus@gmx.de>
To: Dmitry Gutov <dgutov@yandex.ru>
Cc: Lars Ingebrigtsen <larsi@gnus.org>, Sam Steingold <sds@gnu.org>,
42966@debbugs.gnu.org
Subject: bug#42966: 28.0.50; vc-dir: wrong backend
Date: Sat, 24 Oct 2020 15:41:38 +0200 [thread overview]
Message-ID: <87y2jvwxkd.fsf@gmx.de> (raw)
In-Reply-To: <d0729f0f-30bd-274c-8473-28ebd8656d13@yandex.ru> (Dmitry Gutov's message of "Sat, 24 Oct 2020 02:53:35 +0300")
Dmitry Gutov <dgutov@yandex.ru> writes:
> Hi Michael,
Hi Dmitry,
> Not in Tramp, but I see an old change in VC that was most likely
> informed by a performance problem in Tramp.
>
> See the commit a40c87a0093. It adds caching of the result of
> vc-git-root to a VC property 'git-root' on the file name.
This seems to be bug#11757.
> Does the change below still make some scenario perceptibly slower?
>
> diff --git a/lisp/vc/vc-git.el b/lisp/vc/vc-git.el
> index b1880c0f7b..91554bb6d8 100644
> --- a/lisp/vc/vc-git.el
> +++ b/lisp/vc/vc-git.el
> @@ -1573,8 +1573,7 @@ vc-git-extra-menu
> (defun vc-git-extra-status-menu () vc-git-extra-menu-map)
>
> (defun vc-git-root (file)
> - (or (vc-file-getprop file 'git-root)
> - (vc-file-setprop file 'git-root (vc-find-root file ".git"))))
> + (vc-find-root file ".git"))
>
> ;; grep-compute-defaults autoloads grep.
> (declare-function grep-read-regexp "grep" ())
I haven't tested. But this means to call process-file several times,
it would be a performance degradation, for sure.
Best regards, Michael.
next prev parent reply other threads:[~2020-10-24 13:41 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-21 15:15 bug#42966: 28.0.50; vc-dir: wrong backend Sam Steingold
2020-10-16 8:55 ` Lars Ingebrigtsen
2020-10-16 12:44 ` Dmitry Gutov
2020-10-16 14:41 ` Lars Ingebrigtsen
2020-10-16 14:44 ` Dmitry Gutov
2020-10-17 7:02 ` Lars Ingebrigtsen
2020-10-17 7:13 ` Lars Ingebrigtsen
2020-10-17 7:19 ` Lars Ingebrigtsen
2020-10-17 20:41 ` Dmitry Gutov
2020-10-18 8:26 ` Lars Ingebrigtsen
2020-10-17 20:44 ` Dmitry Gutov
2020-10-18 7:38 ` Michael Albinus
2020-10-23 23:53 ` Dmitry Gutov
2020-10-24 13:41 ` Michael Albinus [this message]
2020-10-24 19:42 ` Dmitry Gutov
2020-10-25 17:49 ` Michael Albinus
2020-10-26 14:29 ` Dmitry Gutov
2020-10-26 15:17 ` Michael Albinus
2020-10-26 20:12 ` bug#42966: (no subject) Lars Ingebrigtsen
2020-10-26 20:13 ` Lars Ingebrigtsen
2020-10-26 20:55 ` bug#42966: Dmitry Gutov
2020-10-26 21:02 ` bug#42966: Lars Ingebrigtsen
2020-10-26 21:44 ` bug#42966: Dmitry Gutov
2020-10-26 21:11 ` bug#42966: 28.0.50; vc-dir: wrong backend Dmitry Gutov
2020-10-18 8:32 ` Lars Ingebrigtsen
2020-10-16 15:35 ` Glenn Morris
2020-10-16 18:19 ` Dmitry Gutov
2020-10-17 6:06 ` Lars Ingebrigtsen
2020-10-17 20:01 ` Dmitry Gutov
2020-10-18 8:31 ` Lars Ingebrigtsen
2020-10-26 21:54 ` Glenn Morris
2020-10-26 21:58 ` Lars Ingebrigtsen
2020-10-26 22:14 ` Dmitry Gutov
2020-10-26 22:11 ` Dmitry Gutov
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