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bug#19716: Excessive Windows registry accesses

From: PK
Subject: bug#19716: Excessive Windows registry accesses
Date: Wed, 28 Jan 2015 19:32:49 +0100
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0

When I invoke GNU Emacs (24.4.1 (x86_64-w64-mingw32) of 2014-10-21 on KAEL) on Windows 7, it makes an enormous number of what seem (to me) unnecessary identical registry accesses.

20 times each:

QueryValue: HKLM\System\CurrentControlSet\Control\Nls\CodePage\28605 (success) QueryValue: HKLM\System\CurrentControlSet\Control\Nls\CodePage\28604 (name not found)

1849 times each in quick succession (!):

    OpenKey: HKCU\SOFTWARE\GNU\Emacs (name not found)
    OpenKey: HKLM\SOFTWARE\GNU\Emacs (name not found)

1850 times likewise (also !):

    QueryKey: HKCU (success -- unsurprisingly)

and likewise finally, 1884 times:

    QueryKey: HKLM (more unsurprising success)



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