python - Too many files open with multiprocessing.Pool -

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i have python script runs multiprocessing.pool process lot of files separately. have cpu limit of 8. problem after running while "ioerror: [errno 24] many open files". each child process opens few files reading file.open(). these file handlers passed multiple functions retrieve data. @ end of each child process these files closed file.close(). tried statement did not fix issue. 1 have idea whats wrong. googled around failed find answers. closing files , functions returning keep file handlers around.

my settings mac 10.5 python 2.6

thanks

ogan

    custom import func1, func2     # func1 , func2 seek, read , return values form file     # however, not close file     import multiprocessing     def worker(*args):         f1 = open("db1.txt")         f2 = open("db2.txt")         each in args[1]:             # many stuff             x = func1(f1)             y = func2(f2)          f1.close()         f2.close()         return      data = {1:[2], 2:[3]}       jobp= multiprocessing.pool(8)      jobp.map_async(worker, data.items())      jobp.close()     jobp.join()

its being limited operating system's open file limit. see how change number of open files limit in linux? more information. prefer change /etc/security/limits.conf settings.


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