Well this is not really a limit on number of files, rather a memory allocation optimization for fd_array. The limit you are looking for is:
int sysctl_nr_open __read_mostly = 1024*1024; $ cat /proc/sys/fs/nr_open 1048576 -Rajat On Wed, Dec 5, 2012 at 4:38 PM, Vijay Chauhan <kernel.vi...@gmail.com>wrote: > Hello, > > How many files a process can open at a time? Is it configurable? > > I found following in the kernel code: > > .. > .max_fds = NR_OPEN_DEFAULT, > .. > .. > #define NR_OPEN_DEFAULT BITS_PER_LONG > .. > .. > #ifdef __KERNEL__ > #define BITS_PER_LONG 32 > .. > > But I can open more than 32 files in my user space program. > > Thank you, > Vijay > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
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