Need help fixing Nodejs Project development Issues

Hello Nodejs Experts, I am in middle of Nodejs project development. My Nodejs app reads data every 10ms from LabView TCP (Server) & Nodejs is TCP Client. I collect this stream data every 10ms in array say for 10minuites, once data is colected, this data is saved in XML file. Now, while data is being saved asynchronously, the TCP starts collecting next data every 10 ms and Nodejs TCP Client sends status data to Labview TCP server I have following issues: Problem 1: 1) TCP Write to Labview blocks for few seconds 2) While writing to XML CPU spikes 20 to 30%. I believe CPU Spike Occurs as I read file with fsRead Stream then XML2JS reads file, XMLBuilder adds object to data and fswrite stream writes back to xml file So in short..tcp write gets blocked for few seconds, CPU spike occurs, XML file about 250MB is saved and TCP Write resumes while TCP is reading (read is not blocked). Problem 2: I have added worker_thread logic to handle this XML parsing and writing to XML. I am able to pass workerData but I need to make it work with passing functions from other files and using pkg or any other tool create exe. Kindly let me know if anyone is available to solve these issues. Appreciate in advance for the response.