[Beowulf] What are people seeing performance-wise for NFS over 10GbE

[Joe Landman]

Jan Heichler wrote:
> Hallo Joe,
> 
> Donnerstag, 28. Februar 2008, meintest Du:

[...]

> The best i saw for NFS over 10 GE was about 350-400 MB/s write and about 450 MB/s read.
> Single server to 8 simultaneous accessing clients (aggregated performance). 

Hi Jan:

   Ok. Thanks.  This is quite helpful.

> 
> On the blockdevice i got 550 MB/s write and 1.1 GB/s read performance. 

Using iSCSI?  To real disks or ramdisk/nullio? Most of the benchmarks I 
have seen online have been to nullio or ramdisks.  We are going to real 
disks.

> JL>    2.6.23.14 kernel on both sides, jumbo frames enabled. No switch, just
> JL> a CX4 cable.
> 
> rsize/wsize are set to? 

I tried a range: 8k through 64k

> 
> NFS3 or NFS4? 

3.

Thanks!

Joe

> 
> Cheers,
> Jan


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