iSCSI R3 Enterprise performance tuning

[Raudi]

I tested some things:

Used a additional Reaktek GigaBit NIC, but the IOMeter read speed was only 7 MB/s and the write speed like the Intel NIC at 40 MB/s.

I tested with the multiprocessor and sigleprocessor testing kernels, but all the same...

I updated the Firmware of the 3Ware to the last one, but no change.

Some questions:

- What is the better enviroment: Direct links from the target to the initiator with a single cable or is it better to use a switch.

- Can i test the network performance from the initiator to the target and ignore the performance of the raid?

- What must i do to configure the NIC to 1000 FullDuplex fix, no autodetection.

Regards
Stefan

[To-M]

Maybe disabling Flow control will help. Try changing this from the Console Tools in ALT+CTRL+T -> Modify driver option function. Any option will need to restart system. Sometimes forcing the speed value parameters may work for some NICs also look to see what the AutoNeg is set to (Intel NICs are set to 32).

[Raudi]

But what must i enter in the fields for "FlowControl", "AutoNeg", "Duplex" and "Speed" to set them?

I don't think that this will help, because a few hours ago i startet my restore again, this data will go with eth1 into the storage and runs with 70 MBit/s (from check_sys). In ESX i saw a speed of 8 MB/s. Then i started a IOMeter from my workstation which is connected to eth0 and got 30-35 MB/s but in this moment the speed in ESX goes down to 500 KB/s. Wehen i stop IOMeter the speed in ESX goes up again... But i will leave nothing untested.

The best will be when i can made a networking test, to see what performance i got when i made this on one NIC and then on two and final at all three NIC's.

Regards
Stefan

[Raudi]

I configured with now FlowControl and fix at 1000 Full Duplex, but no change...

Can this be a hardware issue?

I use this Supermicro Board: PDSM4

Are there recommendations which board i can use with a 3Ware RAID and some Intel NIC's?

Regards
Stefan

[To-M]

Try with the Intel Pro 1000 and tell me what you have for the driver settings. Here is the link for Intel settings:

http://www.intel.com/support/network/sb/cs-009209.htm?

[Raudi]

I tryed to set the FlowCotrol to 0 and the AutoNeg to 32.

Tomorrow i'm one week out of the country...

Regards
Stefan

[To-M]

Set the Duplex to (2)=full and Speed to 1000