csvtojson takes care of performance and optimise for Node.js apps.

This project shows csvtojson is about 4 - 6 times faster than other popular csv parsing libraries.

Performance Optimisation

Version 1.1.0 is much faster than versions before.

Below test is parsing a 300k records csv on a 4 core machine

Time	workerNum = 1	workerNum = 2 (fork)*	workerNum = 3	workerNum = 4
1.0.3	11.806s	15.945s	8.611s	8.314s
1.1.0	9.707s	10.065s	5.955s	4.563s

*when workerNum=2, it only creates 1 extra worker to unblock main process. It is reasonalbe it is slightly slower than workerNum=1 (just use main process).

The result shows V1.1.0 has about 30% - 50% performance boost.

CPU usage leverage

Below is CPU core usages for v1.1.0 when running the test:

Core	workerNum = 1	workerNum = 2	workerNum = 3	workerNum = 4
Core 1 (Main)	100%	25%	60%	90%
Core 2	N/A	80%	70%	70%
Core 3	N/A	N/A	70%	70%
Core 4	N/A	N/A	N/A	70%