From: Zhiwei Chen <condy0919@gmail.com>
To: Dmitry Gutov <dgutov@yandex.ru>
Cc: "44210@debbugs.gnu.org" <44210@debbugs.gnu.org>,
Zhiwei Chen <chenzhiwei03@kuaishou.com>
Subject: bug#44210: 28.0.50; project.el failed to work after customizing find-program to fd
Date: Mon, 18 Jan 2021 09:15:03 +0800 [thread overview]
Message-ID: <87ft2zgi5k.fsf@gmail.com> (raw)
In-Reply-To: <636aabc5-b636-bc17-9d76-4aff28f4f60a@yandex.ru> (Dmitry Gutov's message of "Sun, 10 Jan 2021 19:48:32 +0200")
I think I replied to the wrong thread, so forwarded it again.
> I benchmark it again on linux, where find is of 4.7.0 version and fd is of 8.2.1 version.
>
> Make sure the page cache is cleared before each benchmark.
>
> > sudo sysctl -w vm.drop_caches=3
>
> > cd llvm-project
>
> > sudo sysctl -w vm.drop_caches=3
> > time fd > /tmp/fd_output
> 1.04s user 4.11s system 522% cpu 0.987 total
>
> > sudo sysctl -w vm.drop_caches=3
> > time find > /tmp/find_output
> 0.06s user 0.20s system 7% cpu 3.354 total
>
> Since ‘fd’ is a multi-threaded program, the CPU percent is > 100%.
--
Zhiwei Chen
next prev parent reply other threads:[~2021-01-18 1:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-25 11:26 bug#44210: 28.0.50; project.el failed to work after customizing find-program to fd Zhiwei Chen
2020-10-26 22:37 ` Dmitry Gutov
2021-01-10 3:31 ` Zhiwei Chen
2021-01-10 3:37 ` Zhiwei Chen
2021-01-10 17:48 ` Dmitry Gutov
2021-01-18 1:15 ` Zhiwei Chen [this message]
2021-01-18 3:09 ` Dmitry Gutov
2021-01-11 13:04 ` Zhiwei Chen
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