Re: File operations really slow in emacs

[Corinna Vinschen <corinna-cygwin at cygwin dot com>]

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.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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