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Re: Accessing SMB shares extremely slow

From: Michael Albinus
Subject: Re: Accessing SMB shares extremely slow
Date: Mon, 22 Oct 2012 10:26:43 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1.50 (gnu/linux)

Martin Apel <address@hidden> writes:

> Hi Michael,

Hi Martin,

> What is interesting, is that smbclient seems to be much slower
> answering emacs than it is when run from the shell. The strace shows,
> that emacs is waiting for smbclient output for about 6 seconds.  I
> invoked the exact same command "/usr/bin/smbclient //pklma/e -U apel
> -W intec -s /dev/null" from the shell and a get operation from the
> smbclient commandline returns immediately.

Finally, I could reproduce it, with Emacs' profiler:

tramp-accept-process-output  197         198.93150910  1.0098046147
accept-process-output        197         11.273527755  0.0572260292

I have no idea why it happens, but I can play with it now, looking for a
solution. It also seems to happen only for smb connections; a profiling
of a (much slower) remote ssh connection yields

tramp-accept-process-output  664         271.61195060  0.4090541424
accept-process-output        664         115.90111166  0.1745498669

This is a much better rate between both functions. I run with
tramp-verbose 10, which causes tramp-accept-process-output to print traces.

> Best Regards,
> Martin

Best regards, Michael.

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