# Adding Second Processor to Server/Sles10sp4 **URL:** \ **Category:** SLES Configure-Administer\ **Created:** [August 27, 2012, 7:15pm UTC](https://forums.suse.com/t/adding-second-processor-to-server-sles10sp4/23025 "2012-08-27T19:15:19Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![sjfast911](https://avatars.discourse-cdn.com/v4/letter/s/f9ae1b/32.png) [@sjfast911](https://forums.suse.com/u/sjfast911)\ **Post date:** [August 27, 2012, 7:15pm UTC](https://forums.suse.com/t/adding-second-processor-to-server-sles10sp4/23025/1 "2012-08-27T19:15:19Z")
Good morning, I need to add a second processor to two of our Sles10sp4 servers which are VM sessions. After I add the second processor do I need to recomplie the kernel? If so what is the process for doing that? Thanks Scott ---
**Author:** ![malcolmlewis](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/malcolmlewis/32/11375_2.png) [@malcolmlewis](https://forums.suse.com/u/malcolmlewis)\ **Post date:** [August 27, 2012, 7:31pm UTC](https://forums.suse.com/t/adding-second-processor-to-server-sles10sp4/23025/2 "2012-08-27T19:31:04Z")
> [@sjfast911](#): > > Good morning, > > I need to add a second processor to two of our Sles10sp4 servers which > are VM sessions. After I add the second processor do I need to recomplie > the kernel? If so what is the process for doing that? > > Thanks > Scott Hi The command uname -a will show your running a SMP kernel, it should be fine 😉 If it’s a hotswap you might need to online the cores? – Cheers Malcolm °¿° (Linux Counter #276890) SUSE Linux Enterprise Desktop 11 (x86\_64) Kernel 3.0.38-0.5-default up 2 days 23:36, 3 users, load average: 2.42, 2.35, 2.34 CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU ---
**Author:** ![sjfast911](https://avatars.discourse-cdn.com/v4/letter/s/f9ae1b/32.png) [@sjfast911](https://forums.suse.com/u/sjfast911)\ **Post date:** [August 27, 2012, 9:27pm UTC](https://forums.suse.com/t/adding-second-processor-to-server-sles10sp4/23025/3 "2012-08-27T21:27:46Z")
Here is what I get when I do a uname -a: Linux pwausoinf06 2.6.16.60-0.93.1-default #1 Mon Jan 9 23:55:08 UTC 2012 x86\_64 x86\_64 x86\_64 GNU/Linux I was told I need to do the following: 1. get the additional processor(s) 2. install the “kernel-smp” package from yast-\>software-\>packages (you need to install the package & it should pick up the latest kernel from the SMT repository). 3. update the menu.lst to add an option to boot to -smp kernel (you can also go through yast-\>system-\>boot loader) 4. restart & choose the smp option (if not default) But is there more to the instructions than just the above? Scott ---
**Author:** ![malcolmlewis](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/malcolmlewis/32/11375_2.png) [@malcolmlewis](https://forums.suse.com/u/malcolmlewis)\ **Post date:** [August 27, 2012, 9:56pm UTC](https://forums.suse.com/t/adding-second-processor-to-server-sles10sp4/23025/4 "2012-08-27T21:56:52Z")
> [@sjfast911](#): > > Here is what I get when I do a uname -a: > > Linux pwausoinf06 2.6.16.60-0.93.1-default #1 Mon Jan 9 23:55:08 UTC > 2012 x86\_64 x86\_64 x86\_64 GNU/Linux > > I was told I need to do the following: > > 1. get the additional processor(s) > 2. install the “kernel-smp” package from yast-\>software-\>packages > (you need to install the package & it should pick up the latest > kernel from the SMT repository). > 3. update the menu.lst to add an option to boot to -smp kernel > (you can also go through yast-\>system-\>boot loader) > 4. restart & choose the smp option (if not default) > > But is there more to the instructions than just the above? > > Scott Hi Ahh your on SLES 10, for sure change the kernel to the smp one. It may do the switch on menu.lst for you, but as indicated check before a reboot. You can also swap the menu.list to set the SMP version to default, just post the output from menu.lst and will indicate the entry to change. (Please use code tags 😉 ) – Cheers Malcolm °¿° (Linux Counter #276890) SUSE Linux Enterprise Desktop 11 (x86\_64) Kernel 3.0.38-0.5-default up 3 days 2:01, 4 users, load average: 2.39, 2.83, 2.67 CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU ---
**Author:** ![sjfast911](https://avatars.discourse-cdn.com/v4/letter/s/f9ae1b/32.png) [@sjfast911](https://forums.suse.com/u/sjfast911)\ **Post date:** [August 27, 2012, 10:25pm UTC](https://forums.suse.com/t/adding-second-processor-to-server-sles10sp4/23025/5 "2012-08-27T22:25:15Z")
Here is the menu.lst contents; # Modified by YaST2. Last modification on Wed Jun 6 14:26:16 CDT 2012 default 0 timeout 8 ##YaST - generic\_mbr gfxmenu (hd0,0)/boot/message ##YaST - activate ###Don’t change this comment - YaST2 identifier: Original name: linux### title SUSE Linux Enterprise Server 10 - 2.6.16.60-0.93.1 root (hd0,0) kernel /boot/vmlinuz-2.6.16.60-0.93.1-default root=/dev/sda1 vga=0x317 resume=/dev/sda2 splash=silent showopts initrd /boot/initrd-2.6.16.60-0.93.1-default ###Don’t change this comment - YaST2 identifier: Original name: failsafe### title Failsafe – SUSE Linux Enterprise Server 10 - 2.6.16.60-0.93.1 root (hd0,0) kernel /boot/vmlinuz-2.6.16.60-0.93.1-default root=/dev/sda1 vga=normal showopts ide=nodma apm=off acpi=off noresume edd=off 3 initrd /boot/initrd-2.6.16.60-0.93.1-default ###Don’t change this comment - YaST2 identifier: Original name: floppy### title Floppy rootnoverify (hd0) chainloader (fd0)+1 Any suggestions? Thanks Scott ---
**Author:** ![malcolmlewis](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/malcolmlewis/32/11375_2.png) [@malcolmlewis](https://forums.suse.com/u/malcolmlewis)\ **Post date:** [August 28, 2012, 12:46am UTC](https://forums.suse.com/t/adding-second-processor-to-server-sles10sp4/23025/6 "2012-08-28T00:46:07Z")
> [@sjfast911](#): > > Here is the menu.lst contents; > > ```auto > # Modified by YaST2. Last modification on Wed Jun 6 14:26:16 CDT 2012 > default 0 <<<------ > ``` Hi So when you install the new kernel it will either add an entry, all you need to do is modify the ‘default’ to which kernel to boot by default eg if it was the fourth one you would change to 3 (since it starts from zero). – Cheers Malcolm °¿° (Linux Counter #276890) SUSE Linux Enterprise Desktop 11 (x86\_64) Kernel 3.0.38-0.5-default up 3 days 4:50, 4 users, load average: 2.24, 2.25, 2.23 CPU Intel i5 CPU M520@2.40GHz | Intel Arrandale GPU ---
**Author:** ![sjfast911](https://avatars.discourse-cdn.com/v4/letter/s/f9ae1b/32.png) [@sjfast911](https://forums.suse.com/u/sjfast911)\ **Post date:** [August 29, 2012, 3:24pm UTC](https://forums.suse.com/t/adding-second-processor-to-server-sles10sp4/23025/7 "2012-08-29T15:24:57Z")
Thanks for all the info! Scott