Adam,
Thanks alot for this information. I had received this info, but I appreciate the
detail on the best way to implement as well as suggested reading...
I'm still curious however, why the steps I took to change within the kernel were
not successful, it makes me think I have some gap that I'd like to fill. No need
to comment unless the answer is glaring to you... youve already been quite
generous.
If any others have comments on this, I'd love to hear.
Thanks,
ckclark
Adam Sleight wrote:
> don't need to recompile the kernel to increase your SHMMAX
> just add the following to the end of /etc/rc.d/rc.local file
>
> if [ -f /proc/sys/kernel/shmmax ]; then
> expr 128 \* 1024 \* 1024 > /proc/sys/kernel/shmmax
> fi
>
> no need to reboot either just execute rc.local
> /etc/rc.d./rc.local
> then
> cat /proc/sys/kernel/shmmax
> or ipcs -lm like you said
>
> btw I learned this from the documentation from Time Navigator (backup software)
>
> On Tue, 30 May 2000 20:00:07 -0400
> Christina Clark <[EMAIL PROTECTED]> wrote:
> #Greetings,
> #
> #I am setting up an Oracle 8i Server on Intel RedHat 6.2 (kernel
> #2.2.14-5.0).
> #
> #I am very happy with the way the kernel is behaving and only want to
> #increase SHMMAX from 32 megs to 128 megs (half my physical memory).
> #
> #The detailed steps I took to change and recompile the kernel follow
> #below and the process went fine, but when I do an
> #ipcs -lm
> #after booting on the new kernel, I still see max seg size (kbytes) =
> #32768
> #
> #Can anyone explain why I am not seeing any change?
> #
> #Thanks,
> #ckclark
> #
> #
> #Here is what I did.
> #[root@ckclark-pc src]# cd /usr/src
> #(copied to a working directory with o suffix for oracle --paranoia)
> #[root@ckclark-pc src]# cp -r linux-2.2.14-5.0 linux-2.2.14-5.0o
> #Made following change to Makefile:
> #EXTRAVERSION = -5.0o
> #
> #Made some links:
> #[root@ckclark-pc src]# ln -s linux-2.2.14-5.0o linux
> #[root@ckclark-pc src]# cd linux/include
> #[root@ckclark-pc include]# ln -s asm-i386 asm
> #[root@ckclark-pc asm]#
> #Edited /usr/src/linux-2.2.14-5.0o/include/asm/shmparam.h to have:
> #
> ##define SHMMAX 0x8000000 /* max shared seg size (bytes)
> #*/
> #
> #[root@ckclark-pc asm]# cd ../../
> #Created my .config file to be like the one I'm already using:
> #[root@ckclark-pc linux]# make oldconfig
> #Make .depend, .hdepend, recompile
> #[root@ckclark-pc linux]# make dep; make clean; make bzImage; make
> #modules; make modules_install
> #
> #Copied bzImage and System.map to /boot as vmlinuz-2.2.14-5.0o and
> #System.map-2.2.14-5.0o.
> #Created links from /boot/vmlinuz and /boot/System.map to these files.
> #Setup lilo.conf:
> #boot=/dev/hda
> #map=/boot/map
> #install=/boot/boot.b
> #prompt
> #timeout=50
> #linear
> #default=linuxo
> #
> #image=/boot/vmlinuz-2.2.14-5.0
> # label=linux
> # read-only
> # root=/dev/hda10
> #
> #image=/boot/vmlinuz-2.2.14-5.0o
> # label=linuxo
> # read-only
> # root=/dev/hda10
> #
> #Ran lilo and rebooted with the new kernel.
--
To unsubscribe: mail [EMAIL PROTECTED] with "unsubscribe"
as the Subject.
