Re: Accessing SMB shares extremely slow

[Martin Apel]

Hi Michael,

this change helped a lot. I noticed in the strace output, that smbclient 
seems to read its input character by character,
but I did not think that this was responsible for the bad response time. 
Here are the measurements with the latest version:

tramp-smb-file-name-handler                 328 1.0503329999  0.0032022347
tramp-smb-handle-file-local-copy            1 0.503912      0.503912
tramp-smb-send-command                      1 0.502841      0.502841
tramp-smb-wait-for-output                   1 0.502356      0.502356
tramp-accept-process-output                 6 0.50209       0.0836816666
accept-process-output                       6 0.5018520000  0.0836420000
tramp-smb-file-name-p                       328 0.0038649999  1.178...e-05
tramp-smb-handle-expand-file-name           100 0.0023340000  2.334...e-05
tramp-smb-handle-file-attributes            36 0.0011219999  3.116...e-05
tramp-smb-handle-file-writable-p            2 0.000989      0.0004945
tramp-smb-handle-file-directory-p           1 0.000439      0.000439
tramp-smb-get-file-entries                  1 8.7e-05       8.7e-05
tramp-smb-get-localname                     1 5.3e-05       5.3e-05
tramp-smb-maybe-open-connection             1 3e-05         3e-05
tramp-smb-get-cifs-capabilities             1 2.7e-05       2.7e-05
tramp-smb-get-stat-capability               1 2.3e-05       2.3e-05
tramp-smb-get-share                         2 1.300...e-05  6.500...e-06

This speeds up loading of a file dramatically. What is still somewhat 
slow, is dired browsing the remote share, but this is within reasonable 
bounds.

Thanks a lot for your help.

Best Regards,

Martin

On 23/10/12 14:31, Michael Albinus wrote:
> *** ~/src/tramp/lisp/tramp-smb.el.~2.160~       2012-10-23 14:25:26.764160590 
> +0200
> --- ~/src/tramp/lisp/tramp-smb.el       2012-10-23 14:17:20.999213206 +0200
> ***************
> *** 1680,1687 ****
>                      ;; Set chunksize.  Otherwise, `tramp-send-string' might
>                      ;; try it itself.
>                      (tramp-set-connection-property p "smb-share" share)
> !                   (tramp-set-connection-property
> !                    p "chunksize" tramp-chunksize))
>
>                  ;; Check for the error reason.  If it was due to wrong
>                  ;; password, reestablish the connection.  We cannot
> --- 1680,1686 ----
>                      ;; Set chunksize.  Otherwise, `tramp-send-string' might
>                      ;; try it itself.
>                      (tramp-set-connection-property p "smb-share" share)
> !                   (tramp-set-connection-property p "chunksize" 1))
>
>                  ;; Check for the error reason.  If it was due to wrong
>                  ;; password, reestablish the connection.  We cannot
> ***************
> *** 1717,1723 ****
>          (while (and (not found) (not err) (memq (process-status p) '(run 
> open)))
>
>          ;; Accept pending output.
> !       (tramp-accept-process-output p)
>
>          ;; Search for prompt.
>          (goto-char (point-min))
> --- 1716,1722 ----
>          (while (and (not found) (not err) (memq (process-status p) '(run 
> open)))
>
>          ;; Accept pending output.
> !       (tramp-accept-process-output p 0.1)
>
>          ;; Search for prompt.
>          (goto-char (point-min))
> ***************
> *** 1731,1737 ****
>          (while (and (not found) (memq (process-status p) '(run open)))
>
>          ;; Accept pending output.
> !       (tramp-accept-process-output p)
>
>          ;; Search for prompt.
>          (goto-char (point-min))
> --- 1730,1736 ----
>          (while (and (not found) (memq (process-status p) '(run open)))
>
>          ;; Accept pending output.
> !       (tramp-accept-process-output p 0.1)
>
>          ;; Search for prompt.
>          (goto-char (point-min))


--

Martin Apel
Software Architect
Phone:   + 49 8105 77266-53
E-Mail:  address@hidden

SIMPACK AG
Friedrichshafener Strasse 1, 82205 Gilching, Germany
address@hidden, www.simpack.com
Phone: + 49 8105 77266-0
Fax:   + 49 8105 77266-11


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