[Samba] S4 file server : access to large file > 1 GB

BOTZ Franck (Informaticien) - DDT 67/SG/MGI/CI franck.botz at bas-rhin.gouv.fr
Fri Apr 5 07:37:47 MDT 2013

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 ?



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