On Tue, Jan 02, 2001 at 10:27:02AM +0100, Christian Gennerat wrote:
> Measured with toshoboe / irtty 115 kb/s
>
> 1) mount irnet1:/.. -t nfs /irnfs , cp -a /irnfs/..... /tmp
> About 1.5 kb/s , same as zmodem on a serial link at 19200 bauds
>
> 2) ftp irnet1 , get
> About 8 kb/s for .rpm or .gz files, up to 90 kb/s for text files
>
> 3) Samba on ppp0, to be tested.
>
> Why ftp is faster than nfs?
> What transfer method is used in Jean Tourrilhes's measures?
Jean Tourrilhes uses :
o kilo-bit per seconds (kb/s), and not kilo-byte per seconds (kB/s)
o Netperf and ftp
So, if you convert the kB/s to kb/s, you get roughly the same
number as me (64 kb/s).
Now, for NFS, I have no idea. The clever engineers at SUN did
design NFS on top of UDP, so implement their own congestion control
algorithm. I would not be surprise that it doesn't scale on such link
(the latency is high, the losses as well). You might have some other
weird interaction with UDP over PPP...
Could it be possible for you to use NFS over TCP ?
Regards,
Jean
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