NFS - Server-to-client speed 1

[MoshiachNow]

Hi,

Does it make sense that the Server-To client speed is twice the Client-to-server one ? "Long live king Moshiach !"
h

http://www.noahide.com/movement.htm

 

[victorv]

Hi, levw

NFS is a strange animal;

I suggest, before make tuning on NFS
(buffer size, number of daemons, ...)
to benchmark well your client-server environment:

A) Use ftp (from client) and try to put and get a
big file; if you see similar differences, NFS
is not responsable: your server writes on
disk slower than read or writing of your client.

B) Be carefull: NFS use caches, and some time when
you read the same file, the 2nd time is faster than 1st.

bye.

 

[MoshiachNow]

Thanks,

But how to force the NFS NOT to use cache ? "Long live king Moshiach !"
h

http://www.noahide.com/movement.htm

 

[victorv]

Hi,

for the test is easy: change the file you get

time cp /remote/file1 .
time cp /remote/file2 .

or umount between the 2 operations.


Using, you can put -o noac in mount command.

 

[MoshiachNow]

thanks a lot. "Long live king Moshiach !"
h

http://www.noahide.com/movement.htm

 

[victorv]

Hi, levw

just for curiosity,

which are your conclusions ?

does ftp present the same differences ?

thank-you.

 

[MoshiachNow]

rcp:
client-to-Server=16 Sec
Server-to-Client=16 Sec

NFS (cahed,but it does not matter):
client-to-Server=54 Sec
Server-to-Client=18 Sec

I would appreciate an advice on decreasing the NFS client-to-Server speed - it's 3 (!) times higher then the other way around.

"Long live king Moshiach !"
h

http://www.noahide.com/movement.htm