Re: tramp (2.1.16-pre); Wicked slowdown

[David Abrahams]

On Apr 16, 2009, at 7:26 AM, Michael Albinus wrote:

> David Abrahams <address@hidden> writes:
>
> > I've noticed TRAMP being /really/ slow on my mac compared to my Linux
> > machine.  I am using a more recent snapshot of TRAMP on my mac, so  
> > it's
> > not the same thing of course.  I'd visit /boostpro.com:.emacs and it
> > would just sit there for a long time after finding the remote shell
> > prompt.  Spent a few hours debugging this: I turned on "enter  
> > debugger
> > on quit" and hit `C-g' a few times during this long process.  What  
> > the
> > backtraces had in common was the mapcar call in tramp-get-remote- 
> > path.
> > CVS blame seems to indicate that's a recent change.
>
> Unfortunately, the enclosure containing the debug buffer is empty.  
> Could
> you, please, ruren the test, and send the debug buffer then?

I have enclosed a bunch of backtraces from where I hit `C-g' while  
tying to connect.  I hope that's helpful.  Unfortunately this appears  
to be a Mac-specific problem, and it's not because of the mapcar call  
I referred to, because that call doesn't appear in the version of  
Tramp I was using for bt4-bt6.  Aquamacs (which is Emacs 22) with -q  
exhibits it in addition to my current Emacs 23 snapshot.  However, I  
installed the emacs-snapshot package in an ubuntu VM running on that  
same hardware and I don't see it there.

> In order to have a clean environment, you might apply "M-x
> tramp-cleanup-connection" first for the respective remote connection.


Yeah, I found that trick, thanks.

bt1
Description: Binary data

bt2
Description: Binary data

bt3
Description: Binary data

bt4
Description: Binary data

bt5
Description: Binary data

bt6
Description: Binary data

--
David Abrahams
BoostPro Computing
http://boostpro.com