Performance issue with processing large subdomain lists

[vhgbao01]

I've been using alterx to process the results of passive subdomain enumeration from tools like subfinder, amass, and findomain. The combined list contains approximately 7 million subdomains.

Command: alterx -l passive_subdomains.txt -en -silent

It's taking an excessively long time to complete - more than a day or two.

I'm curious if there are any optimizations or configurations that can be made to reduce the execution time and wondering if alterx supports concurrent processing to speed up the processing of large datasets like this.

Any help or guidance on this would be greatly appreciated. Thanks in advance.