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Date:	Tue, 14 Feb 2012 08:37:51 -0500
From:	Ryan Johnson <ryan DOT johnson AT cs DOT utoronto DOT ca>
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To:	cygwin AT cygwin DOT com
Subject:	Re: File operations really slow in emacs
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Bump?

On 13/02/2012 8:31 AM, Ryan Johnson wrote:
> On 11/02/2012 5:11 AM, Corinna Vinschen wrote:
>> On Feb 10 20:18, Ryan Johnson wrote:
>>> Hi all,
>>>
>>> For some reason file operations have become very slow inside emacs
>>> starting yesterday. It's especially painful when saving a file
>>> that's managed by mercurial (more than 20 seconds!), but I've seen
>>> it on the command line as well (x-server takes a similar amount of
>>> time to start, for example). I'm running the latest everything and
>>> I've run rebaseall. I verified that Windows Defender did not
>>> silently re-enable itself since I last disabled it (you can't
>>> actually uninstall it) and no other BLODA are present on my machine.
>>> The problem persists across reboots.
>>>
>>> I have vague memories that this has turned up in the past (maybe
>>> 12-15 months ago?) but Google isn't turning up anything. Attaching
>>> strace to emacs during the save makes it take a full 35 seconds and
>>> reports the following:
>>>
>>> $ cat emacs.strace | awk '{if ($1>  1000000) { print }}' | grep -v
>>> timer_thread
>>> 26910790 26912157 [main] emacs-X11 5188 child_copy: dll bss - hp
>>> 0x264 low 0x611FC000, high 0x61230770, res 1
>>> 1128419 2125655 [main] python2.6 5188 read: read(5, 0x8009DB60,
>>> 65536) blocking
>>> 25850184 32830582 [main] python2.6 5188 stat_worker: 0 =
>>> (\??\C:\cygwin\cygdrive,0x28BB68)
>>    ^^^^^^^^^^^^^^^^^^^^^^^
>>    This looks suspicious.  I assume you're suffering from SMB network
>>    scanning.
> is there a workaround? Neither "always run elevated" nor "always keep 
> all network drives mounted" seems like a reasonable requirement


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