On Mon, Oct 31, 2011 at 9:08 AM, Vlad Weinbaum <[email protected]> wrote: > [...] I found detail that I cannot explain. I query the QP after connect and > get timeout value 16, > that must be 4 us * 2^16 = 256 ms, but I get about 800 ms.
As Sean indicated, the timeout is **based** on the packet_life_time, in case you're configuring your QP through the rdma-cm, the IB stack code actually adds one to the packet_life_time quantity as a rough estimate for the local hca ack delay, still maybe there is a hole here and the query qp verb isn't reporting correctly, what was the value you configured on the sm side, and how many retries did you use for the qp? each retry will double the time you should be observing in practice. Or. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
