On 11/13/2012 06:28 PM, Paolo Bonzini wrote: > Il 13/11/2012 17:18, Juan Quintela ha scritto: >> Migration Thread >> * Plan is integrate it as one of first thing in December (me) > > Please make sure to take a look at the latest reviews I sent. > >> * Remove copies with buffered file (me) > > I also have some prototype of this. > >> RDMA >> * Send RDMA/tcp/.... library they already have (Benoit) >> * This is required for postcopy >> * This can be used for precopy > > * Investigate RDS (Reliable Datagram Socket, which work on top of both > TCP and InfiniBand/RDMA. > >> General >> * Change protocol to: >> a) being always 16byte aligned (paolo said that is faster) > > Well, it's faster with the buffers. Hopefully they go away and we do > not have the problem. > >> b) do scatter/gather of the pages? I would prefer to postpone changing the protocol and start with using iov (writev) for sending the pages (still sending header and than the page). Later we can move to scatter/gather I'm not sure of how large the performance gain will be. > > c) Remove compression of non-zero repetitive pages. +1 we can look of identify the zero pages without calling is_dup_page which looks expensive.
Orit > > All of the above, I'd say. > > Paolo >
