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timeout when opening large files

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

Re: timeout when opening large files

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.

Re: timeout when opening large files

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.

Re: timeout when opening large files

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.

Re: timeout when opening large files

HI Sudheer,

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

Maico

Re: timeout when opening large files

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

Re: timeout when opening large files

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

Thanks!