On Thu, Sep 22, 2016 at 5:40 PM, Michał Purzyński <michalpurzyns...@gmail.com> wrote: > What's the current status ofI/O and ixgbe driver and 82599 cards? Is it > even used? How's the performance? > > If it is used, do you know in which stage exactly? Is it used to copy data > from driver buffers (those that card does DMA into from FIFO) to sk_buff or > from sk_buff to socket buffers?
I/OAT isn't really used by network devices anymore. If I recall correctly it is only really used by the storage subsystem as gains are only really seen when doing copies larger than 256KB. The only part that is really still used is DCA, and that is used to provide hints to push packet data into the lowest level cache on certain CPUs. - Alex ------------------------------------------------------------------------------ _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
