I have a project where I am streamlining a report generation system to put out lots of reports in a short amount of time. I prepare the input files for each customer into one big file sorted by key and when the data is ready process this against the data file. The problem is that I need to write the data out to many files and may have thousands at a time to deal with.

Currently I store up about 5000 lines of output in a hash, then write it out in append mode to however many files I accumulated. I doubt this is the best way to do this. Originally I had thought to maintain all the filehandles in an array but I believe I ran into OS limits that way.

Is there a better way to do something like this quickly?

We've recently switched from solaris to quad dual core Xeons running Linux with 16Gigs of RAM... it is ok if I utilize up to probably 75% of the system (maybe even a bit higher) for the biggest jobs.

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In reply to Writing to many (>1000) files at once by suaveant

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