Distributed IPC Queues in a RT Cluster...

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2 total messages Started by Sean Conway Thu, 23 Feb 1989 15:29

#1567

Author: Sean Conway
Date: Thu, 23 Feb 1989 15:29

16 lines
783 bytes

Does anyone have any experience with Distributed IPC Queues in a
RT Cluster:

() Modem 135 and a Model 125
() AIX V2.2.0
() Distributed Services 1.2

Specifically, I can't seem to define keys longer than seven digits long,
even though, my program on a call to ftok() returns keys eight digits long.

Am I missing something?

Sean Conway
Adelie Corporation

sean@adelie.Adelie.COM

Re: Distributed IPC Queues in a RT Cluster...

#1568

Author: Jason Levitt
Date: Fri, 24 Feb 1989 04:42

21 lines
1195 bytes

In article <22857@adelie.Adelie.COM> sean@adelie.Adelie.COM (Sean Conway) writes:
>Does anyone have any experience with Distributed IPC Queues in a
>RT Cluster:
>    ........
>
>Specifically, I can't seem to define keys longer than seven digits long,
>even though, my program on a call to ftok() returns keys eight digits long.
>

I haven't used Distributed Services (DS) since the pre-1.0
days, but it used to be that the IPC key space allowed keys 
in the range 0x0 - 0xffffffff .
  Of those keys, the ones available to users were:

   0x30000 - 0xfffff  -- keys returned by create_ipc_prof(3)

   0x10000000 - 0xffffffff - keys returned by ftok(3)

   The rest of the keys are unavailable.         

     ---Jason

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