Re: PID Length

• Previous message: Adam Hanel: "Re: PID Length"
• Maybe in reply to: Basim Chafik: "PID Length"
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Date:         Sun, 8 Feb 2004 20:27:51 -0500
To: aix-l@Princeton.EDU

Sorry guys. The answer is 8 in AIX5 and 7 in AIX4

#include <sys/proc.h>
main() {
Printf("max pid is %ld\n, PIDMAX);
}
Yields: max pid is 67108863

8 digits, 67108863= 0x'3FFFFFF' = 26 bits, leaving 6 bits unused
18 bits are used for the slot number in the proc table (17 in AIX4)
8 bits are used for an incrementing, even number (0-254) for each proc that
occupies the slot.
The only proc that doesn't follow this rule is init=1.

...Rick

-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of Adam
Hanel
Sent: February 8, 2004 11:29 AM
To: aix-l@Princeton.EDU
Subject: Re: PID Length

I believe it's 6 on AIX v4 and 7 on AIX v5.
--Adam

-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
Basim Chafik
Sent: Wednesday, January 21, 2004 7:10 AM
To: aix-l@Princeton.EDU
Subject: PID Length

Hi AIXer,

Any body have any idea about what is the max digits a PID can get. A
programmer asked me this in order to allocate a size for t PID in the
application. The most I have seen is 7. Do you have any clue ?

Thanks.
Basim

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• Previous message: Adam Hanel: "Re: PID Length"
• Maybe in reply to: Basim Chafik: "PID Length"
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