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...e will be a one-to-one mapping between QPs and CPUs (on the > guest). Er we are really overloading words here.. The typical expectation is that a 'RDMA QP' will have thousands and thousands of instances on a system. Most likely I think mapping 1:1 a virtio queue to a 'RDMA QP, CQ, SRQ, etc' is a bad idea... > However, I'm still curious about the overall intent of this driver. Where > would the I/O be routed _to_ ? > It's nice that we have a virtualized driver, but this driver is > intended to do I/O (even if it doesn't _do_ any I/O ATM :-) > And t...

...e will be a one-to-one mapping between QPs and CPUs (on the > guest). Er we are really overloading words here.. The typical expectation is that a 'RDMA QP' will have thousands and thousands of instances on a system. Most likely I think mapping 1:1 a virtio queue to a 'RDMA QP, CQ, SRQ, etc' is a bad idea... > However, I'm still curious about the overall intent of this driver. Where > would the I/O be routed _to_ ? > It's nice that we have a virtualized driver, but this driver is > intended to do I/O (even if it doesn't _do_ any I/O ATM :-) > And t...

...een QPs and CPUs (on the > > guest). > > Er we are really overloading words here.. The typical expectation is > that a 'RDMA QP' will have thousands and thousands of instances on a > system. > > Most likely I think mapping 1:1 a virtio queue to a 'RDMA QP, CQ, SRQ, > etc' is a bad idea... We have three options, no virtqueue for QP, 1 to 1 or multiplexing. What would be your vote on that? I think you are for option #1, right? but in this case there is actually no use of having a virtio-driver, isn't it? > > > However, I'm still curi...

I believe 30 sec is the default for the checkpoint interval.  Is this adjustable? -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

On Thu, Apr 11, 2019 at 07:02:15PM +0200, Cornelia Huck wrote: > On Thu, 11 Apr 2019 14:01:54 +0300 > Yuval Shaia <yuval.shaia at oracle.com> wrote: > > > Data center backends use more and more RDMA or RoCE devices and more and > > more software runs in virtualized environment. > > There is a need for a standard to enable RDMA/RoCE on Virtual Machines. > >

On Thu, Apr 11, 2019 at 07:02:15PM +0200, Cornelia Huck wrote: > On Thu, 11 Apr 2019 14:01:54 +0300 > Yuval Shaia <yuval.shaia at oracle.com> wrote: > > > Data center backends use more and more RDMA or RoCE devices and more and > > more software runs in virtualized environment. > > There is a need for a standard to enable RDMA/RoCE on Virtual Machines. > >