On Sun, Sep 29, 2024 at 03:26:58PM -0500, Michael Galaxy wrote: > > On 9/29/24 13:14, Michael S. Tsirkin wrote: > > !-------------------------------------------------------------------| > > This Message Is From an External Sender > > This message came from outside your organization. > > |-------------------------------------------------------------------! > > > > On Sat, Sep 28, 2024 at 12:52:08PM -0500, Michael Galaxy wrote: > > > A bounce buffer defeats the entire purpose of using RDMA in these cases. > > > When using RDMA for very large transfers like this, the goal here is to map > > > the entire memory region at once and avoid all CPU interactions (except for > > > message management within libibverbs) so that the NIC is doing all of the > > > work. > > > > > > I'm sure rsocket has its place with much smaller transfer sizes, but this is > > > very different. > > To clarify, are you actively using rdma based migration in production? Stepping up > > to help maintain it? > > > Yes, both Huawei and IONOS have both been contributing here in this email > thread. > > They are both using it in production. > > - Michael Well, any plans to work on it? for example, postcopy does not really do zero copy last time I checked, there's also a long TODO list. -- MST
