为什么Ruby的popen3崩溃是因为“打开的文件过多”？

I am using Popen3 to run some Perl scrips and then dump their output into a text file. Once in the text file, I search for the result of the Perl script. I get the error after running for about 40 minutes, which is about 220 files.I am using Popen3 to run some Perl scrips and t