topic Re: timeout when opening large files in Network and Storage Protocols

timeout when opening large files

mdvillanueva — Thu, 05 Jun 2025 06:24:25 GMT

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

scottgelb — Thu, 21 Jun 2012 17:44:57 GMT

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

mdvillanueva — Thu, 21 Jun 2012 18:20:32 GMT

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

SUDHEER_H21 — Thu, 21 Jun 2012 22:11:46 GMT

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

mdvillanueva — Thu, 21 Jun 2012 22:18:38 GMT

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

pascalduk — Fri, 22 Jun 2012 09:15:44 GMT

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

Re: timeout when opening large files

mdvillanueva — Fri, 22 Jun 2012 10:54:59 GMT

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

Thanks!