On 08/25/2014 03:31 PM, Donald Williams wrote: > On a semi-related note, are there any good guides out there to tuning > Linux for maximum single-socket performance? On my 40 gigabit setup, I > seem to hit a wall around 3 gigabits when doing a single TCP socket. To > go far above that I need to do multipath, initiator-side RAID, or RDMA.
What kernel are you using? Are you doing IO to one LU or multiple? Like I said in the last mail, there is a bottleneck with the scsi/block layer, however in the current rc kernel there are some major changes to fix this issue (the blk/scsi multiqueue/mq work). The Mellanox guys also recently did some locking changes which should help. I have been working on some patches for iscsi mq support, but do not currently have access to hw to test. It is extremely unstable so no where near production ready!!! With that warning, do you want test? I can send instructions and a patch. -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/open-iscsi. For more options, visit https://groups.google.com/d/optout.
