[Scst-devel] iSCSI-SCST Performance

[Alexander T. <ale...@gm...>]

Hi,

I'm using Debian 9 with iSCSI-SCST to present to a windows server using
vdisk_blockio (with ZFS). Windows server has 32gb Ram and Intel i7 (i3770k)
CPU. The Debian server has 32gb ram and an Intel i5-7600k cpu.

Both servers have a Mellanox ConnectX2 (10 Gigabit Ethernet) and they are
connected directly, e.g. there is no router in between.

I'm in the testing phase and getting very poor results, as in:

A simple pool (raid 0) of 4 Samsung 840 EVO Drives 1TB each, where I get
less than 100mbytes/sec ??

my scst.conf looks like this:

HANDLER vdisk_blockio {
        DEVICE disk01 {
                filename /dev/DebianZFSPool/xDisk
                nv_cache 1
        }
}

TARGET_DRIVER iscsi {
        enabled 1
        TARGET iqn.2017-08.DebianZFS.TestServer:tgt {

               LUN 0 disk01
               enabled 1

               allowed_portal 192.168.1.110

        }
}

any ideas much appreciated!

Alex