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  2. Java performance - Wikipedia

    en.wikipedia.org/wiki/Java_performance

    In November 2004, Nailgun, a "client, protocol, and server for running Java programs from the command line without incurring the JVM startup overhead" was publicly released. [59] introducing for the first time an option for scripts to use a JVM as a daemon, for running one or more Java applications with no JVM startup overhead. The Nailgun ...

  3. Thread pool - Wikipedia

    en.wikipedia.org/wiki/Thread_pool

    By maintaining a pool of threads, the model increases performance and avoids latency in execution due to frequent creation and destruction of threads for short-lived tasks. [2] Another good property - the ability to limit system load, when we use fewer threads than available.

  4. Thread (computing) - Wikipedia

    en.wikipedia.org/wiki/Thread_(computing)

    A process with two threads of execution, running on one processor Program vs. Process vs. Thread Scheduling, Preemption, Context Switching. In computer science, a thread of execution is the smallest sequence of programmed instructions that can be managed independently by a scheduler, which is typically a part of the operating system. [1]

  5. Java virtual machine - Wikipedia

    en.wikipedia.org/wiki/Java_virtual_machine

    This allows for a much larger Java heap size and an increased maximum number of Java Threads, which is needed for certain kinds of large applications; however there is a performance hit in using 64-bit JVM compared to 32-bit JVM. The JVM has a garbage-collected heap for storing objects and arrays.

  6. Security of the Java software platform - Wikipedia

    en.wikipedia.org/wiki/Security_of_the_Java...

    The Java software platform provides a number of features designed for improving the security of Java applications. This includes enforcing runtime constraints through the use of the Java Virtual Machine (JVM), a security manager that sandboxes untrusted code from the rest of the operating system, and a suite of security APIs that Java developers can utilise.

  7. Green thread - Wikipedia

    en.wikipedia.org/wiki/Green_thread

    Green threads were briefly available in Java between 1997 and 2000. Green threads share a single operating system thread through co-operative concurrency and can therefore not achieve parallelism performance gains like operating system threads. The main benefit of coroutines and green threads is ease of implementation.

  8. Instruction-level parallelism - Wikipedia

    en.wikipedia.org/wiki/Instruction-level_parallelism

    Due to the complexity of scaling the out-of-order execution technique, the industry has re-examined instruction sets which explicitly encode multiple independent operations per instruction. Register renaming , which refers to a technique used to avoid unnecessary serialization of program operations imposed by the reuse of registers by those ...

  9. Simultaneous multithreading - Wikipedia

    en.wikipedia.org/wiki/Simultaneous_multithreading

    This form of multithreading can increase single threaded performance by allowing a single thread to use all resources of the CPU. The allocation of resources is dynamic on a near-single cycle latency level (1–4 cycles depending on the change in allocation depending on individual application needs.