Hi, I have a situation where I have to write to 30,000 simultaneous files based on the contents of X files. So I open the file:

open ${fileno}, ">>$filename";
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I write to the file:

printf ${fileno} "%s\n", $myline;
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The problem is - with so many simultaneous writes going to many different files my disks are thrashing. So what I want to do is increase the write buffer per file handle, and only flush when I either fill that buffer or have X lines in the buffer.