Re: emacs-x11 takes 30-40 sec to open after upgrading to cygwin-1.7

[Dan Tsafrir <dants at cs dot technion dot ac dot il>]

On Mon, Mar 29, 2010 at 19:14, Jon TURNEY <jon.turney@dronecode.org.uk> wrote:
> On 29/03/2010 11:33, Dan Tsafrir wrote:
>>
>> After I've upgraded to cygwin-1.7 my emacs takes 30-40 seconds to
>> open. Following
>> http://x.cygwin.com/docs/faq/cygwin-x-faq.html#poor-performance,
>> disabling my antivirus has no affect on emacs's opening time. As far
>> as I can tell other X programs behave similarly to the way they did
>> before the upgrade. Any help would be appreciated. The output of
>> 'cygcheck -s -v -r' is attached.
>
> LANG = 'C.UTF-8'
>
> You are probably being bitten by [1]
>
> [1] http://sourceware.org/bugzilla/show_bug.cgi?id=10948

I confirm the symptom described in [1] happening when I invoke
emacs-x11; namely, emacs-x11 indeed consumes a lot of CPU upon
startup. But, alas, the workarounds you suggest don't solve the
problem. Specifically:

> As far as I can tell, this is a general problem with X, but cygwin
> unfortunately encounters it in a default install because (a) the default
> locale is a UTF-8 locale, and (b) we don't install the CJK fonts by default.
>
> Workarounds you might try are (a) install the font packages font-isas-misc,
> font-jis-misc and font-daewoo-misc (and restart your server),

As can be seen in the cygcheck.out I've attached to my initial email,
these fonts were/are already installed in my system:

  font-isas-misc                  1.0.1-1
  font-jis-misc                   1.0.1-1
  font-daewoo-misc                1.0.1-1

(In fact, I've installed all the available fonts in cygwin setup.)

> or (b) set your locale to a non-UTF-8 one.

I've conducted a few repeated measurements and it looks as though
setting LANG to be en_US somewhat reduces the start time of emacs-x11:
instead of ~30 seconds with LANG=C.UTF-8, it take ~27 seconds
LANG=en_US. While this is ~10% less, waiting 27 seconds for emacs to
open still seems unreasonable.

Any other ideas?

Thanks,
--Dan

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