async-sync

A gulp-based nodejs test project about performance comparison of sync(serial) and async(parallel)

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Description

There are altogether 2000 documents, each file has 100 lines, a total of 20w line, and each line needs to be modified.

Async uses promise.all() to modify all files in parallel, ending with the ending of the last file modification;

Sync using the ES6 Generator control synchronization, file serial modification, each reading and writing of a file will wait for the previous file to read and write the end

Time consuming results are tested as follows:

Async

Sync

• This gap is too big now !!!!
• This gap is too big now !!!!
• This gap is too big now !!!!

local test

Can clone this item on your local machine for testing:

$ Git clone https://github.com/toxichl/async-sync.git

Installation Dependencies:

$ mpm i

Note: This test is based on Gulp, you can consider the global installation of Gulp.

Initialize, if there is an old test files, delete them, and then generate the new test file:

$ gulp init

Asynchronous (parallel) test:

$ gulp async

Synchronous (serial) test:

$ Gulp sync

Remove old test files:

$ Gulp del

Conclusion

In some cases where parallel control is allowed, use parallelism as much as possible to improve program performance.