http://kbase.redhat.com/faq/FAQ_80_6231.shtm
I think Solaris also supports 32-bit uids, not sure about other OSes.
mj@xxxxxx wrote:
I was wondering if there is an upper limit on the uid or the
gidNumber in
fds.
Or is there a limit on OS level? Does anyone know what it is? Is this
different between the RedHat releases?
Is it different from other Unixes?
I have personally loaded 10 million user accounts into FDS as a
performance test (on a measly 2.4Ghz P4 machine with 512MB of RAM),
and it worked just fine; not sure how many it could theoretically hold.
The linux kernel has officially had support for 32-bit uidnumbers
since kernel v2.4, so the maximum user id number is 4294967295, or
approximately 4.3 billion. This is the same on any distribution using
kernel 2.4 or newer. I am not sure about UNIX...
--
mike
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