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    DateFri, 3 May 1996 11:18:19 -0400 (EDT)
    FromTodd J Derr <>
    Subjectfile limits in kernel
    Hello,
    
    	I'm wondering what the relationship of these constants are:
    
    linux/limits.h:
    #define NR_OPEN          256
    #define OPEN_MAX         256    /* # open files a process may have */
    linux/fs.h:
    #undef NR_OPEN
    #define NR_OPEN 256
    #define NR_FILE 1024    /* this can well be larger on a larger system */
    probably a bad idea having NR_OPEN defined in 2 places....
    the real problem I'm having is ENFILE errors.  Can someone clarify the
    ENFILE/EMFILE distinction?  I'm guessing ENFILE means the kernel's
    file table is full, while EMFILE means a process has violated its
    limit.
    
    So, my questions:
    
    - what do I change to increase the size of the kernel's open file table?
    - what do I change to increase the per-process open file limit?
    - based on the above (getting ENFILE), which one do I _want_ to
      change, kernel or per-process?
    
    and:
    
    - does anyone maintain a list of 'auxilliary' kernel config
      parameters, such as the above, process table limits, etc?  it could
      be pretty useful to stick something like that into the Documentation/
      directory...
    
    thanks,
    
    todd.
    
    
    
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