Eliminating receive livelock in an interrupt-driven kernel
ACM Transactions on Computer Systems (TOCS)
Diagnosing performance overheads in the xen virtual machine environment
Proceedings of the 1st ACM/USENIX international conference on Virtual execution environments
10Gb/s Ethernet performance and retrospective
ACM SIGCOMM Computer Communication Review
Optimizing network virtualization in Xen
ATEC '06 Proceedings of the annual conference on USENIX '06 Annual Technical Conference
Achieving 10 Gb/s using safe and transparent network interface virtualization
Proceedings of the 2009 ACM SIGPLAN/SIGOPS international conference on Virtual execution environments
Towards high-quality I/O virtualization
SYSTOR '09 Proceedings of SYSTOR 2009: The Israeli Experimental Systems Conference
Multiscale not multicore: efficient heterogeneous cloud computing
Proceedings of the 2010 ACM-BCS Visions of Computer Science Conference
Evaluating and enhancing xen-based virtual routers to support real-time applications
CCNC'10 Proceedings of the 7th IEEE conference on Consumer communications and networking conference
Network I/O fairness in virtual machines
Proceedings of the second ACM SIGCOMM workshop on Virtualized infrastructure systems and architectures
Taming heterogeneous NIC capabilities for I/O virtualization
WIOV'08 Proceedings of the First conference on I/O virtualization
Redesigning xen's memory sharing mechanism for safe and efficient I/O virtualization
WIOV'10 Proceedings of the 2nd conference on I/O virtualization
sNICh: efficient last hop networking in the data center
Proceedings of the 6th ACM/IEEE Symposium on Architectures for Networking and Communications Systems
MyriXen: message passing in Xen virtual machines over Myrinet and Ethernet
Euro-Par'09 Proceedings of the 2009 international conference on Parallel processing
ReNIC: Architectural extension to SR-IOV I/O virtualization for efficient replication
ACM Transactions on Architecture and Code Optimization (TACO) - HIPEAC Papers
Towards exitless and efficient paravirtual I/O
Proceedings of the 5th Annual International Systems and Storage Conference
Performance analysis of HPC applications in the cloud
Future Generation Computer Systems
Enabling fast, dynamic network processing with clickOS
Proceedings of the second ACM SIGCOMM workshop on Hot topics in software defined networking
Hyper-switch: a scalable software virtual switching architecture
USENIX ATC'13 Proceedings of the 2013 USENIX conference on Annual Technical Conference
Efficient and scalable paravirtual I/O system
USENIX ATC'13 Proceedings of the 2013 USENIX conference on Annual Technical Conference
Evaluation of messaging middleware for high-performance cloud computing
Personal and Ubiquitous Computing
MultiLanes: providing virtualized storage for OS-level virtualization on many cores
FAST'14 Proceedings of the 12th USENIX conference on File and Storage Technologies
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The networking performance available to Virtual Machines (VMs) can be low due to the inefficiencies of transferring network packets between the host domain and guests. This can limit the application-level performance of VMs on a 10 Gb/s network. To improve network performance, we have created a "virtualization aware" smart network adapter and modified Xen1 to allow direct, but safe, access to such adapters from guest operating systems. Networking overheads are reduced considerably, and the host domain is removed as a bottleneck, resulting in significantly improved performance. We describe our modifications to the Xen networking architecture that allow guest kernels direct -- but secure -- access to the networking hardware, whilst preserving support for migration. We also describe briefly how the same technology is used to grant direct network access to user-level applications and thus provide even greater efficiency in terms of bandwidth, latency and CPU utilisation.