timeout when opening large files

[mdvillanueva]

Hi Experts,

We have SAS programmers and they reported that sometimes when they open their SAS files (SAS7BDAT),  they get timeout error. Is there any thing I can check or tweak in our CIFS configuration to find out if there is something that wrong that needs fixing?

Thanks,

Maico

[scottgelb]

There are some tuning options listed in the appendix of this TR  http://www.netapp.com/us/library/technical-reports/tr-3869.html  ... if you can enable smb2

You can also search for cifs neg_buf_size tuning in addition to the window size in the above tr and consider also opening a performance case (most the options require a restart of cifs after changing).  It could be other latency issues separate from cifs that a perfstat could show.

[mdvillanueva]

Thanks Scott,

I will look at the TR.

Other than what the users are reporting, there are no noticeable latency issues reported by the Performance Advisor.

[SUDHEER_H21]

The timeout error might be because of the value set to the "cifs.idle_timeout" option which is in generally mentioned in seconds. This time in seconds terminates an idle session (no files open). Let me know if this works out or not.

Cheers.

[mdvillanueva]

HI Sudheer,

Thanks for the suggestion. Although the issue is happening when they are actually trying to open a large files.

Maico

[pascalduk]

Have you checked if there are antivirus scanners on either the clients or connected to the filer?

[mdvillanueva]

We do have Scan Engine configured. But i already add the saa mms to eclusions.

Thanks!