Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: PID sequences | Date | 24 Feb 1998 02:32:22 GMT |
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Followup to: <19980223174907.52885@avanticorp.com> By author: Jim Nance <jlnance@avanticorp.com> In newsgroup: linux.dev.kernel > > Hello all, > I have been meaning to post this for about a year but I keep > forgetting :-( I'm waiting on something to finish running, and I > finally remembered. > > I have seen severl posts (over the last couple of years) where > people complained about either performance or security problems related > to generating PID numbers for child processes at fork() time. There is > the assumption that PID numbers increase, skipping over in-use PIDs, > and then wrap at 32K. I dont think Digital Unix does it this way: >
All of these assumptions are bad. There are a number of systems which don't follow this, including AIX.
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