samba - Apr 2013 - S4 file server : access to large file > 1 GB

Hi all

My S4 is configured as a file server.

The AD DC is a 2003 win server.

My users are talking about slow speed on open pst file or other largest file.

I have this in my smb.conf

socket options = TCP_NODELAY SO_RCVBUF=32768 SO_SNDBUF=32768

I tranfer a 3GB file on the server and I see variations in speed transfer.

Generally it cost 28% of my bandwith (1 Gb/s) but, after a while, it  
speed down to 8% or 5% for a little time (1 second) and then go to 28%.

I see this 4 times in the transfer.

 From what can it be ?

Thanks

FRanck

Did you see the same results for all workstations?  What versions of the Windows
clients are you running that you see this problem with?

-gc

"BOTZ Franck (Informaticien) - DDT 67/SG/MGI/CI 	" <franck.botz at
bas-rhin.gouv.fr> wrote:
>Hi all
>
>My S4 is configured as a file server.
>
>The AD DC is a 2003 win server.
>
>My users are talking about slow speed on open pst file or other largest
file.
>
>I have this in my smb.conf
>
>socket options = TCP_NODELAY SO_RCVBUF=32768 SO_SNDBUF=32768
>
>I tranfer a 3GB file on the server and I see variations in speed transfer.
>
>Generally it cost 28% of my bandwith (1 Gb/s) but, after a while, it  
>speed down to 8% or 5% for a little time (1 second) and then go to 28%.
>
>I see this 4 times in the transfer.
>
> From what can it be ?
>
>Thanks
>
>FRanck
>
>-- 
>To unsubscribe from this list go to the following URL and read the
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>

On Fri, Apr 05, 2013 at 03:37:47PM +0200, BOTZ Franck (Informaticien) - DDT
67/SG/MGI/CI wrote:
> Hi all
> 
> My S4 is configured as a file server.
> 
> The AD DC is a 2003 win server.
> 
> My users are talking about slow speed on open pst file or other largest
file.
> 
> I have this in my smb.conf
> 
> socket options = TCP_NODELAY SO_RCVBUF=32768 SO_SNDBUF=32768
Delete the above line with extreme prejudice. Don't
go second guessing the kernel socket tuning.

Jeremy.