On 7/26/2015 6:53 PM, Christoph Hellwig wrote:
On Sun, Jul 26, 2015 at 02:00:51PM +0300, Sagi Grimberg wrote:
On the wire iser sends a single rkey, but the target is allowed to
transfer the data however it wants to.
So you're trying to get above the limit of a single RDMA READ, not
above the limit for memory registration in the initiator?
Correct.
In that case your explanation makes sense, that's just not what I expected
to be the limiting factor.
In the initiator case, there is no way to support transfer size that
exceeds the device registration length capabilities (unless we start
using higher-order atomic allocations which we won't).
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