* Oracle SHM values?
@ 2004-03-10 18:40 Robert L. Harris
2004-03-27 23:45 ` Michael Mauch
0 siblings, 1 reply; 2+ messages in thread
From: Robert L. Harris @ 2004-03-10 18:40 UTC (permalink / raw)
To: Linux-Kernel
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I have users who need this:
set the following in /usr/src/linux/include/asm/shmparam.h
SHMMAX 128MB
SHMMIN 1
SHMMNI 100
SHMSEG 10
and following in /usr/src/linux/inlude/linux/sem.h
SEMMNI 100
SEMMSL 60
SEMMNS 110
SEMOPM 100
SEMVMX 32767
then recompile and install.
Is there a way to pass these values via append, or anything other than
having a one-off custom kernel config?
:wq!
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Oracle SHM values?
2004-03-10 18:40 Oracle SHM values? Robert L. Harris
@ 2004-03-27 23:45 ` Michael Mauch
0 siblings, 0 replies; 2+ messages in thread
From: Michael Mauch @ 2004-03-27 23:45 UTC (permalink / raw)
To: linux-kernel
Robert L. Harris wrote:
> I have users who need this:
> set the following in /usr/src/linux/include/asm/shmparam.h
> SHMMAX 128MB
> SHMMIN 1
> SHMMNI 100
> SHMSEG 10
>
> and following in /usr/src/linux/inlude/linux/sem.h
>
> SEMMNI 100
> SEMMSL 60
> SEMMNS 110
> SEMOPM 100
> SEMVMX 32767
> then recompile and install.
> Is there a way to pass these values via append, or anything other than
> having a one-off custom kernel config?
You can set some of them with sysctl:
% sysctl -a | egrep "sem|shm"
kernel.sem = 250 32000 32 128
kernel.shmmni = 4096
kernel.shmall = 2097152
kernel.shmmax = 33554432
The order of the space separated list in kernel.sem is semmsl semmns
semopm semmni (see /usr/src/linux/ipc/sem.c).
I guess the "missing" variables are no longer needed in kernel 2.4/2.6.
Regards...
Michael
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