GNU bug report logs - #44210
28.0.50; project.el failed to work after customizing find-program to fd

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Message #23 received at 44210 <at> debbugs.gnu.org (full text, mbox):

From: Zhiwei Chen <condy0919 <at> gmail.com>
To: Dmitry Gutov <dgutov <at> yandex.ru>
Cc: "44210 <at> debbugs.gnu.org" <44210 <at> debbugs.gnu.org>,
 Zhiwei Chen <chenzhiwei03 <at> kuaishou.com>
Subject: Re: 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

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

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