has anybody tested this with 10Gb cards? what is the performance gains? 
I have tested it lightly and found that there are some gains but without 
a 10Gb switch in the mix testing is very difficult.
Paul

Yao Wei wrote:
> In short:
>
> ------------------------------------------------------------------------------------
> Case A
> Initiator: IBM x3550 (two NICs),  /dev/sda (local disk),  100-120 MB/s
> (hdparm -t /dev/sda).
> Target:    Dell (only one NIC),   /dev/sda (local disk), dev/sda (IET
> disk),70-90 MB/s(hdparm -t /dev/sda)
>
> when login with iscsi, open-iscsi find new attached disk /dev/sdb,
> remote reading speed is less than 10 MB (hdparm -t /dev/sdb)   (*)
>
>
> ------------------------------------------------------------------------------------
> Case B
> Initiator: Dell (only one NIC),    /dev/sda (local disk),  70-90 MB/s
> (hdparm -t /dev/sda).
> Target:    IBM x3550 (two NICs),   /dev/sda (local disk),  dev/sda
> (IET disk),100-120 MB/s(hdparm -t /dev/sda)
>
> when login with iscsi, open-iscsi also find new attached disk: /dev/
> sdb, remote reading speed is about 80 MB/s(hdparm -t /dev/sdb)  (**)
>
>
> ------------------------------------------------------------------------------------
> Case C
> Initiator: ThinkPad x61 notebook (one NIC),  /dev/sda (local disk),
> 50-60 MB/s (hdparm -t /dev/sda).
> Target:    Dell (only one NIC),              /dev/sda (local disk),
> dev/sda (IET disk),70-90 MB/s(hdparm -t /dev/sda)
>
> when login with iscsi, open-iscsi find new attached disk /dev/sdb,
> remote reading speed is about 40-50 MB (hdparm -t /dev/sdb)   (***)
>
>
> ------------------------------------------------------------------------------------
> Case D
> Initiator: Dell (only one NIC),               /dev/sda (local disk),
> 70-90 MB/s (hdparm -t /dev/sda).
> Target:    ThinkPad x61 notebook (one NIC),   /dev/sda (local disk),
> dev/sda (IET disk),50-60 MB/s(hdparm -t /dev/sda)
>
> when login with iscsi, open-iscsi find new attached disk /dev/sdb,
> remote reading speed is about 50 MB (hdparm -t /dev/sdb)   (***)
>
> -----------------------------------------------------------------------------------
>
> That is what confused me.
> >
>
>   

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