并发与并行的区别
Concurrency is when two tasks can start, run, and complete in overlapping time periods. Parallelism is when tasks literally run at the same time, eg. on a multi-core processor.
Concurrency is the composition of independently executing processes, while parallelism is the simultaneous execution of (possibly related) computations.
Concurrency is about dealing with lots of things at once. Parallelism is about doing lots of things at once.
An application can be concurrent – but not parallel, which means that it processes more than one task at the same time, but no two tasks are executing at same time instant.
An application can be parallel – but not concurrent, which means that it processes multiple sub-tasks of a task in multi-core CPU at same time.
An application can be neither parallel – nor concurrent, which means that it processes all tasks one at a time, sequentially.
An application can be both parallel – and concurrent, which means that it processes multiple tasks concurrently in multi-core CPU at same time.
Vipin Jain. Differences between concurrency vs. parallelism
相关文章
- spring学习笔记(20)数据库事务并发与锁详解
- 高并发与多线程的关系、区别、高并发的技术方案
- 异步任务处理系统,如何解决业务长耗时、高并发难题?
- 8-4python语法基础-并发编程-进程线程协程,实战练习
- [阅读笔记]Go语言并发之美
- 高并发之服务降级和服务熔断____服务降级、熔断、限流的区别
- Atitit 并发锁机制 艾提拉总结 目录 1. 2. 用的比较频繁锁2 1.1. 语法锁sync api锁2 1.2. 数据库标志位锁2 1.3. 文件锁2 2. 锁得类型32 2.
- 【面试】QPS、TPS、并发用户数、吞吐量关系
- 服务器并发
- 【高并发】深度解析ScheduledThreadPoolExecutor类的源代码
- Go语言自学系列 | golang并发编程之channel的遍历
- go并发-01 _ Mutex:如何解决资源并发访问问题?
- 高并发系统限流-漏桶算法和令牌桶算法
- 【Java并发编程系列】全方位理解多线程几乎包含线程的所有操作哦