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Launched in 2001, ionCube PHP Accelerator (PHPA) was the first freely available PHP accelerator to compete with the commercial Zend Cache product. Created before ionCube Ltd. was founded and at a time when the performance of PHP was regarded as lackluster when compared to other popular web programming languages, [citation needed] PHPA showed that PHP can compete with other languages ...
HipHop Virtual Machine (HHVM) is an open-source virtual machine based on just-in-time (JIT) compilation that serves as an execution engine for the Hack programming language. By using the principle of JIT compilation, Hack code is first transformed into intermediate HipHop bytecode ( HHBC ), which is then dynamically translated into x86-64 ...
HipHop for PHP (HPHPc) is a discontinued PHP transpiler created by Facebook.By using HPHPc as a source-to-source compiler, PHP code is translated into C++, compiled into a binary and run as an executable, as opposed to the PHP's usual execution path of PHP code being transformed into opcodes and interpreted.
Most PHP accelerators work by caching the compiled opcode/bytecode of PHP representation of php files to avoid the overhead of parsing and compiling source code on each request (some or even most of which may never be executed).
The newest version is Zend Engine 4, which was developed for PHP 8. The source code for the Zend Engine has been freely available under the Zend Engine License (although some parts are under the PHP License) since 1999, [5] as part of the official releases from php.net, as well as the official git repository or the GitHub mirror. Various ...
Live migration, also called migration, refers to the process of moving a running virtual machine (VM) or application between different physical machines without disconnecting the client or application. Memory, storage, and network connectivity of the virtual machine are transferred from the original guest machine to the destination.
Platform virtualization software, specifically emulators and hypervisors, are software packages that emulate the whole physical computer machine, often providing multiple virtual machines on one physical platform. The table below compares basic information about platform virtualization hypervisors.
A system virtual machine (also called SYS-VM [citation needed]) is a virtual machine (VM) that provides a complete system platform and supports the execution of a complete operating system (OS). [1]