In RHEL 5, why does /proc/sys/fs/file-nr show open files in multiples of 510?

Solution Unverified - Updated -

Issue

The file /proc/sys/fs/file-nr always outputs 0, 1, 510 or some other multiple of 510 such as 1020 or 1530 as a number of open files.

Environment

  • Red Hat Enterprise Linux (RHEL) 5

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