From: Robert Pluim <rpluim@gmail.com>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: emacs-devel@gnu.org
Subject: Re: string_char_to_byte and string_byte_to_char micro-optimisation
Date: Mon, 17 Jun 2019 11:37:15 +0200 [thread overview]
Message-ID: <m2r27sh7sk.fsf@gmail.com> (raw)
In-Reply-To: b7788422-ec36-20ea-1a8e-28f2cf0f6109@cs.ucla.edu
>>>>> On Fri, 14 Jun 2019 09:53:50 -0700, Paul Eggert <eggert@cs.ucla.edu> said:
Paul> On 6/14/19 5:37 AM, Robert Pluim wrote:
>> What I donʼt have is any intuition on whether such a change actually
>> makes any difference in real-world Emacs usage. Can anyone suggest any
>> benchmarks?
Paul> My usual benchmark for this sort of thing is 'make compile-always' in
Paul> the lisp directory.
It doesnʼt make a significant difference, so I donʼt think thereʼs any
point in complicating the code:
With patch, run 1:
real 4m21.097s
user 3m39.020s
sys 0m33.267s
With patch, run 2:
real 4m13.649s
user 3m34.102s
sys 0m31.834s
Without patch, run 1:
real 4m15.264s
user 3m34.305s
sys 0m32.719s
Without patch, run 2:
real 4m18.266s
user 3m36.531s
sys 0m33.315s
prev parent reply other threads:[~2019-06-17 9:37 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-14 12:37 string_char_to_byte and string_byte_to_char micro-optimisation Robert Pluim
2019-06-14 16:53 ` Paul Eggert
2019-06-14 19:00 ` Eli Zaretskii
2019-06-14 20:11 ` Stefan Monnier
2019-06-15 6:22 ` Eli Zaretskii
2019-06-15 7:48 ` Stefan Monnier
2019-06-15 11:11 ` Noam Postavsky
2019-06-16 11:17 ` Stefan Monnier
2019-06-17 9:37 ` Robert Pluim [this message]
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