Eliminating receive livelock in an interrupt-driven kernel
ACM Transactions on Computer Systems (TOCS)
Virtualizing I/O Devices on VMware Workstation's Hosted Virtual Machine Monitor
Proceedings of the General Track: 2002 USENIX Annual Technical Conference
Xen and the art of virtualization
SOSP '03 Proceedings of the nineteenth ACM symposium on Operating systems principles
Intel Virtualization Technology
Computer
A comparison of software and hardware techniques for x86 virtualization
Proceedings of the 12th international conference on Architectural support for programming languages and operating systems
QEMU, a fast and portable dynamic translator
ATEC '05 Proceedings of the annual conference on USENIX Annual Technical Conference
ALS '01 Proceedings of the 5th annual Linux Showcase & Conference - Volume 5
Accelerating two-dimensional page walks for virtualized systems
Proceedings of the 13th international conference on Architectural support for programming languages and operating systems
virtio: towards a de-facto standard for virtual I/O devices
ACM SIGOPS Operating Systems Review - Research and developments in the Linux kernel
Bridging the gap between software and hardware techniques for I/O virtualization
ATC'08 USENIX 2008 Annual Technical Conference on Annual Technical Conference
Software techniques to improve virtualized I/O performance on multi-core systems
Proceedings of the 4th ACM/IEEE Symposium on Architectures for Networking and Communications Systems
Achieving 10 Gb/s using safe and transparent network interface virtualization
Proceedings of the 2009 ACM SIGPLAN/SIGOPS international conference on Virtual execution environments
Virtualization polling engine (VPE): using dedicated CPU cores to accelerate I/O virtualization
Proceedings of the 23rd international conference on Supercomputing
Getting 10 Gb/s from Xen: safe and fast device access from unprivileged domains
Euro-Par'07 Proceedings of the 2007 conference on Parallel processing
SR-IOV networking in Xen: architecture, design and implementation
WIOV'08 Proceedings of the First conference on I/O virtualization
The evolution of an x86 virtual machine monitor
ACM SIGOPS Operating Systems Review
The turtles project: design and implementation of nested virtualization
OSDI'10 Proceedings of the 9th USENIX conference on Operating systems design and implementation
SplitX: split guest/hypervisor execution on multi-core
WIOV'11 Proceedings of the 3rd conference on I/O virtualization
vIC: interrupt coalescing for virtual machine storage device IO
USENIXATC'11 Proceedings of the 2011 USENIX conference on USENIX annual technical conference
ELI: bare-metal performance for I/O virtualization
ASPLOS XVII Proceedings of the seventeenth international conference on Architectural Support for Programming Languages and Operating Systems
Adding advanced storage controller functionality via low-overhead virtualization
FAST'12 Proceedings of the 10th USENIX conference on File and Storage Technologies
Streaming as a hypervisor service
Proceedings of the 7th international workshop on Virtualization technologies in distributed computing
Efficient and scalable paravirtual I/O system
USENIX ATC'13 Proceedings of the 2013 USENIX conference on Annual Technical Conference
Speeding up packet I/O in virtual machines
ANCS '13 Proceedings of the ninth ACM/IEEE symposium on Architectures for networking and communications systems
I/o paravirtualization at the device file boundary
Proceedings of the 19th international conference on Architectural support for programming languages and operating systems
Delegating OpenGL commands to host for hardware support in virtualized environments
Proceedings of the 8th International Conference on Ubiquitous Information Management and Communication
Shrinking the hypervisor one subsystem at a time: a userspace packet switch for virtual machines
Proceedings of the 10th ACM SIGPLAN/SIGOPS international conference on Virtual execution environments
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Virtualization is a prominent technology used in data centers around the world. While many kinds of workloads can run at near-native performance even when virtualized, I/O intensive workloads still suffer from high overhead precluding the use of virtualization in many applications. In this paper we tackle the problem of improving the performance of paravirtual I/O. We propose an exitless paravirtual I/O model, under which guests and the hypervisor, running on distinct cores, exchange exitless notifications instead of costly exit-based notifications. Our initial proof of concept improved throughput by 45% and latency by 25μsec compared to a traditional network paravirtual I/O model. We show that a single hypervisor I/O core can become saturated when serving multiple I/O intensive guests, and further research is required to improve scalability in this scenario.