Editing Direct memory access (section)

=== I/OAT ===
As an example of DMA engine incorporated in a general-purpose CPU, some Intel [[Xeon]] chipsets include a DMA engine called [[I/O Acceleration Technology]] (I/OAT), which can offload memory copying from the main CPU, freeing it to do other work.<ref>{{cite web | last = Corbet | first = Jonathan | title = Memory copies in hardware | work = [[LWN.net]] | date = December 8, 2005 | url = https://lwn.net/Articles/162966/ }}</ref> In 2006, Intel's [[Linux kernel]] developer Andrew Grover performed benchmarks using I/OAT to offload network traffic copies and found no more than 10% improvement in CPU utilization with receiving workloads.<ref name="linuxnet-ioat">{{cite web |first=Andrew |last=Grover |title=I/OAT on LinuxNet wiki |work=Overview of I/OAT on Linux, with links to several benchmarks |date=2006-06-01 |url=http://www.linuxfoundation.org/collaborate/workgroups/networking/i/oat |access-date=2006-12-12 |archive-date=2016-05-05 |archive-url=https://web.archive.org/web/20160505034410/http://www.linuxfoundation.org/collaborate/workgroups/networking/i/oat |url-status=dead }}</ref>