Today 10-Gigabit interfaces are used increasingly in datacenters and servers. On these links, packets flow as fast as one every 67.2 nanoseconds, yet modern operating systems can take 10−20 times longer just to move one packet between the wire and the application. We can do much better, not with more powerful hardware but by revising ar- chitectural decisions made long ago regarding the design of device drivers and network stacks. The netmap framework is a promis- ing step in this direction. Thanks to a careful design and the engineering of a new packet I/O API, netmap elimi- nates much unnecessary overhead and moves traffic up to 40 times faster than existing operating systems. Most im- portantly, netmap is largely compati- ble with existing applications, so it can be incrementally deployed.
Revisiting Network I/O APIs: The Netmap Framework
RIZZO, LUIGI
2012-01-01
Abstract
Today 10-Gigabit interfaces are used increasingly in datacenters and servers. On these links, packets flow as fast as one every 67.2 nanoseconds, yet modern operating systems can take 10−20 times longer just to move one packet between the wire and the application. We can do much better, not with more powerful hardware but by revising ar- chitectural decisions made long ago regarding the design of device drivers and network stacks. The netmap framework is a promis- ing step in this direction. Thanks to a careful design and the engineering of a new packet I/O API, netmap elimi- nates much unnecessary overhead and moves traffic up to 40 times faster than existing operating systems. Most im- portantly, netmap is largely compati- ble with existing applications, so it can be incrementally deployed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
