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From: Janis Papanagnou <janis_papanagnou+ng@hotmail.com>
Newsgroups: comp.unix.shell
Subject: Re: pid ranges (Was: (bash) How (really!) does the "current job" get
 determined?)
Date: Mon, 7 Oct 2024 04:58:56 +0200
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On 05.10.2024 19:13, Kenny McCormack wrote:
> In article <slrnvg2nc2.2dut.naddy@lorvorc.mips.inka.de>,
> Christian Weisgerber  <naddy@mips.inka.de> wrote:
> ...
>>> time frame.  Nowadays, we have 22 bit pids, so it is even less likely (*).
>>
>> "We" do?  Offhand, I don't know the size of pid_t, much less how
>> much of its numerical range is actually used.
> 
> On Linux, check out: /proc/sys/kernel/pid_max
> 
> As I read the various posts on the subject, 15 bit is still the limit on 32
> bit systems, 22 bit on 64 bit systems.  But, of course, YMMV.

Hmm.. - my [a bit rusty] 64 bit Linux displays 32768 (15 bit).

(Not that I had anytime needed more than a fraction of these;
currently "only" about 2%.)

Janis

> [...]