Alright Alright, I concede it does loop, I should have used the word never. I'll change it to rarely and be done with it, in any case I think Silambu got his answer which briefly is:
No PID = 412 doesn't mean there are 412 process currently running on your machine. Read the man page for ps to learn how to identify processes that are currently running. ----- Original Message ----- From: "John T. Williams" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, September 10, 2003 2:04 PM Subject: Re: About PID...???!!! > definitely higher then 2^16, I've got a process with the PID of 69917 > I would guess MAX_INT which is 2^32 -1 = 4294967295 > > ----- Original Message ----- > From: "Ray Olszewski" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, September 10, 2003 11:58 AM > Subject: Re: About PID...???!!! > > > > At 11:21 AM 9/10/2003 -0400, John T. Williams wrote: > > >They are assigned linearly, however once a pid is used, it is never > reused > > >until the machine reboots. > > > > This is not quite correct. The pid assignment process wraps, I *think* at > > 32767 (or maybe 65535). Next time around, the kernel skips over any pids > > that are still in use from the last round of assignment. > > > > >A pid of 413 means that when that process was fork()'ed there had been > 412 > > >other processes already created. But remember every time you type ls, > you've > > >run a process. > > > > > >413 isn't a large pid at all. My linux box which I very rarely reboot is > at > > >PIDs that start at 20000 > > > > > >I'm surprised that any program you start after the boot process is as low > as > > >412. > > > > Whether that is surprising or not depends on what he uses the host for > and, > > naturally, on how recently it was rebooted. While my workstation is way up > > there (30180), my Linux-based router, which does not start new processes > > very much, is only at pid 828. > > > > And, of course, there are persistent processes on any Linux host that go > > back to the boot/init process ... starting with init itself (always pid 1) > > and including long-lived daemons such as syslogd, klogd, and portmap; > > pseudo processes that are actually run in the kernel (mostly [k*] process > > names); and getty proceses listening on VTs that never get logins. > > > > > > > > - > > To unsubscribe from this list: send the line "unsubscribe linux-newbie" in > > the body of a message to [EMAIL PROTECTED] > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > Please read the FAQ at http://www.linux-learn.org/faqs > > - > To unsubscribe from this list: send the line "unsubscribe linux-newbie" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.linux-learn.org/faqs - To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs
