On Mon, Apr 05, 2021 at 08:23:54AM +0300, Leon Romanovsky wrote: > From: Leon Romanovsky <leonro@xxxxxxxxxx> > > From Avihai, > > Relaxed Ordering is a PCIe mechanism that relaxes the strict ordering > imposed on PCI transactions, and thus, can improve performance. > > Until now, relaxed ordering could be set only by user space applications > for user MRs. The following patch series enables relaxed ordering for the > kernel ULPs as well. Relaxed ordering is an optional capability, and as > such, it is ignored by vendors that don't support it. > > The following test results show the performance improvement achieved Did you test this patchset with CPU does not support relaxed ordering? We observed significantly performance degradation when run perftest with relaxed ordering enabled over old CPU. https://github.com/linux-rdma/perftest/issues/116 thanks
