I think I got my answer, I was simply dd if=/dev/hdiskX ... and I should have done dd if=/dev/rhdiskX ... using the raw device instead of the block device increased the instate result significantly !...
I have fresh new installed VIO 2.2.3.70 on a p710, 3 physical SAS disks, rootvg on hdisk0
and 3 VIO clients through vscsi, AIX7.1tl4 AIX6.1tl9 RHEL6.5ppc, each lpar has its rootvg...
Thanks for helping, I had already tested your recommendation but still the same.
I still think it is a limitation on AIX (a magic parameter to change?)
To prove it, I have now narrowed down this...
I have tested initially 2 lpar on the same p710 using virtual ethernet adapter and have the same result 1.5MB/s. There was no switch between,just using the hypervisor
1 lpar aix 7.1 as target.the...
I have 4 gigabit Ethernet adapters, the embedded ones that come with the P710.
I am using only one of them. as I said I am able to ftp at 125MB/s from RHEL6 to AIX, same network,same card, just the...
-Thanks for your answer, I understand that jumbo frames can increase performance, but still with normal frames I should be able to have at least 20-30MB/s
-I don't understand the relation with FC...