Re: Regarding performance issues with the Emacs 25.1 Windows-build

["Jostein Kjønigsen" <jostein@secure.kjonigsen.net>]

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While I think comparing performance between Linux to Windows is a
reasonable to a certain extent, I don't think it should be done blindly.


What I think is more interesting is the platform-specific performance
with regard to prior versions.

 * When I upgraded from Emacs 24.5 to Emacs 25.1 on Linux, I didn't
   notice a difference in performance characteristics.
 * When I upgraded from Emacs 24.5 to Emacs 25.1 on Windows, I
   immediately noticed massive slowdowns.


That was my frame of reference when initially starting this thread. Due
to Emacs (or at least certain Emacs-packages) being heavily reliant on
sub-processes to do the heavy lifting, and the platforms' very different
performance-characteristics w.r.t. threads vs processes, I wouldn't
expect Emacs on Windows to perform exactly the same as on Linux.


I just don't think directly comparing performance between two platforms
as such is realistic, or that immediately useful.


Just look at Git for Windows. It's *much *slower than on Linux, due to
heavy sub-process use. But the performance in between versions stays
pretty much the same. As a user, as long as Emacs for Windows does the
same, I don't see a problem.


If however the Emacs-developers considers this a problem, feel free to
investigate it further at your own discretion :)


--

Jostein Kjønigsen

🥓

jostein@kjonigsen.net / jostein@gmail.com

https://jostein.kjonigsen.net







On Wed, Nov 30, 2016, at 08:56 AM, Fabrice Popineau wrote:

> There is a user on Reddit who pretends that theses latest binaries of
> Emacs run slower on Windows than on Linux.
> I didn't get a chance yet to give it a try.

> The test is as follows :

> 

> - Install Helm from MELPA.

> - Add this config to the init file, as suggested by Helm page

> 

> https://www.reddit.com/r/emacs/comments/5e3xpu/emojis_in_emacs_intentionally_disabled_for_osx/dabya5i/
> If anybody has a chance to do the testing. I'm not sure about what
> helm config  he is
> talking about (the full one or the default one).

> My guess is that something else than emacs is disturbing his load time
> (antivirus ?).
> But that could be nice to have something asserted about this.

> 

> Regards,

> 

> Fabrice

> 

> 

> 2016-11-29 22:47 GMT+01:00 Phillip Lord <phillip.lord@russet.org.uk>:
>> Jostein Kjønigsen <jostein@secure.kjonigsen.net> writes:
>>  > I haven't seen any more feedback on this on the public mailing-
>>  > list since I last emailed, so I don't know if you've received
>>  > adequate, or any feedback at all at this point.
>>
>>
>> Yes, you'd replied and one piece of feedback is plenty! Just a bit
>>  work-bombed at the moment, hence the slow movement.

>>
>>
>>  > I therefore wanted to let you know that I've now used this build
>>  > as "my daily driver" since you published it, as a replacement for
>>  > (previously superior) Emacs 24.5, and I've had no major complaints
>>  > or incidents so far.
>>  >
>>  >
>>  > In my opinion, as the one who originally raised this issue, I'm
>>  > happy to consider this issue resolved.
>>
>> Good and timely feedback. The new version on ftp.gnu.org
>> 

>> https://ftp.gnu.org/gnu/emacs/windows/

>> 

>>  I'll wait a few days and then remove the unoptimized version.

>>
>>  > And let me say: Thanks again for your work. It's really
>>  > appreciated!
>>
>> No worries, am glad to have got the feedback.
>> 

>>  I'll try and get the next pre-release out of the door as soon as
>>  I can!
>> 

>>  Phil

>> 

> 

> 

> 

> -- 

> Fabrice Popineau

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