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Avi Kivity

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Avi Kivity
Born1970
Alma materTechnion - Israel Institute of Technology
Occupation(s)Co-founder, CTO, Software engineer
EmployerScyllaDB
Known forKernel-based_Virtual_Machine, ScyllaDB

Avi Kivity (Hebrew: אבי קויתי) is a software engineer who created the Kernel-based Virtual Machine (KVM) hypervisor underlying many production clouds.[1][2] Following his work on KVM, Kivity developed the Seastar framework and the ScyllaDB database.[2][3] He co-founded the company ScyllaDB with Dor Laor; Kivity is CTO and an active project contributor.[2]

Career

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Kivity began the development of KVM at Qumranet in 2006.[4] After Red Hat acquired Qumranet in 2008, Kivity joined Red Hat and continued as the lead developer and maintainer of KVM.[4][5]

After leaving Red Hat in 2012, Kivity co-founded a company called Cloudius Systems with Dor Laor.[2] Cloudius developed the OSv operating system for the cloud.[6] While at Cloudius, Kivity created the Seastar framework, an open-source (Apache 2.0 licensed) C++ framework for I/O intensive asynchronous computing.[2] Seastar later became the foundation for high performance distributed systems such as ScyllaDB, Redpanda, and Ceph.[7]

In mid-2014, Cloudius Systems was renamed to ScyllaDB, after its main product which is used for high-throughput database workloads that require low latencies. (Forbes) Kivity serves as the company's chief technology officer and contributes to the source code development of ScyllaDB as well as Seastar.[8]

Patents

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Kivity has been granted patents for technologies implemented in KVM and ScyllaDB [9]

  • Asynchronous input/output (I/O) using alternate stack switching in kernel space (8850443)
  • Delivery of events from a virtual machine to host CPU using memory monitoring instructions (9256455)
  • Delivery of events from a virtual machine to a thread executable by multiple host CPUs using memory monitoring instructions (9489228)
  • CPU using memory monitoring instructions (9256455)]
  • Delivery of events from a virtual machine to a thread executable by multiple host CPUs using memory monitoring instructions (9489228)
  • Detection of guest disk cache (9354916)
  • Event signaling in virtualized systems (9830286)
  • Heat-based load balancing (11157561)
  • Injecting interrupts in virtualized computer systems (9235538)
  • Interprocess communication (9075795)
  • Managing device access using an address hint (9575787)
  • Mechanism for automatic adjustment of virtual machine storage (8244956)
  • Mechanism for memory state restoration of virtual machine (VM)-controlled peripherals at a destination host machine during migration of the VM (8356120)
  • Mechanism for out-of-synch virtual machine memory management optimization (8560758)
  • Memory change tracking during migration of virtual machine (VM) with VM-controlled assigned peripherals (9104459)
  • Memory state transfer of virtual machine-controlled peripherals during migrations of the virtual machine (8924965)
  • MSI events using dynamic memory monitoring (10078603)
  • On-demand hypervisor memory mapping (9342450)
  • Optimistic interrupt affinity for devices (9003094)
  • Optimization of operating system and virtual machine monitor memory management (10761957)
  • Pessimistic interrupt affinity for devices (9201823)
  • Policy enforcement by hypervisor paravirtualized ring copying (9904564)
  • Virtual machine wakeup using a memory monitoring instruction (9489223)

References

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See also

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