Shulou(Shulou.com)06/02 Report--

Write a blog for the first time. Recently found that a lot of technical things quickly read and forget, hope to write through their own understanding, I think this is a way.

When I went to interview linux software some time ago, the interviewer asked me what are the advantages and disadvantages of multi-threading and multi-process, and when to use multi-process and multi-thread. In fact, I have seen this question and answer on the Internet before, and then I took a glance, but I didn't really understand it. If someone asks me how to answer this question now, I think I have my own answer.

First of all, the memory between multiple processes is isolated, so synchronization is relatively simple, but the communication between processes is more troublesome, which needs to communicate through IPC (pipes, named pipes, message queues, socket). The creation and destruction of processes consume a lot of resources.

So when to use multiprocess and when to use multithreading?

Multi-process: considering program stability

Multithreading: programs that need to be created and destroyed frequently and require a lot of operations

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