On Wed, Feb 11, 2009 at 04:35:47PM -0500, Scott Atchley wrote: > ...... > SOCKLND is limited by a copy on the receive side. When a client > writes, the server has to copy the data out. When a client reads, it > ......
One exception is SOCKLND on Chelsio's T3, quote: "The T3 ASIC uses the mechanism of Direct Data Placement (DDP) that provides a flexible zero copy on receive capability for regular TCP connections, requiring no changes to the sender, the wire protocol, or the socket API on sending or the receiving side." I remembered that a small SOCKLND fix was landed recently to make use of this zero copy receive capability. Isaac _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
