Does anyone know, or is there documentation describing Windows timeout values for Read and Write via SMB?

Richard Sharpe realrichardsharpe at
Sun Dec 2 08:11:24 MST 2012

On Sat, Dec 1, 2012 at 9:54 PM, Christopher R. Hertel <crh at> wrote:
> On 12/01/2012 11:30 PM, Jeremy Allison wrote:
>> On Sat, Dec 01, 2012 at 01:56:57PM -0800, Richard Sharpe wrote:
>>> Hi folks,
>>> Is there any documentation or any experience on how many SMBecho's
>>> Windows is prepared to receive before it declares a READ or WRITE has
>>> failed?
>> Isn't it a timing thing rather than a "number of echos" thing ?
> Richard:  Are you talking about Windows clients sending SMBechos to see if
> the server is alive or the server receiving and responding to SMBechos while
> still processing other operations?

Well, yes.

More specifically, I am interested in knowing:

1. How much patience does Windows have? Ie. what are the timeout values?

2. Where are they defined in the registry?

Richard Sharpe

More information about the samba-technical mailing list