- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - Linux
- >
- CPU Missing
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-27-2007 09:48 PM
тАО08-27-2007 09:48 PM
CPU Missing
I recently upgraded my RHAS3 to RHAS4(update 3). After the upgrade i noticed that the OS was not able to see the second CPU and after digging into the issue i realised that the kernel that was instaled was fro uni and not multi. there is just one entry in grub.conf file and even the proc/cpuinfo file shows just one CPU.
But before the upgrade i could see the second CPU (2 Dual Core)
I am wondering as to why just an upgrade can messup with teh multi CPU kernel not getting installed. Is there a way i can get the OS to see all the CPU's I am afraid to do mush r&d on this as this is one of our heavily used database server, which i cannot afford to go down for a long time.
PS: The diagnostics does not mention about any CPU failure and i can see both CPU's online from my dell Open manager
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,1)
# kernel /vmlinuz-version ro root=/dev/vg00/rootvol
# initrd /initrd-version.img
#boot=/dev/sda
default=0
timeout=10
splashimage=(hd0,1)/grub/splash.xpm.gz
title Red Hat Enterprise Linux AS (2.6.9-34.EL)
root (hd0,1)
kernel /vmlinuz-2.6.9-34.EL ro root=/dev/vg00/rootvol
initrd /initrd-2.6.9-34.EL.img
====================================
[root@innova .gconf]# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 4
model name : Intel(R) Xeon(TM) CPU 3.20GHz
stepping : 3
cpu MHz : 3192.330
cache size : 2048 KB
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips : 6388.42
clflush size : 64
cache_alignment : 128
address sizes : 36 bits physical, 48 bits virtual
power management:
=======================================
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-27-2007 09:53 PM
тАО08-27-2007 09:53 PM
Re: CPU Missing
This will force the installation of the SMP kernel.
As to why the installation didn't do it on it's own, well.. odd.
Something to be wary of however. If you have oodles of RAM (more than 16GB), you'll want the kernel-hugemem instead. It's SMP aware, and can handle up to 64GB (if memory serves).
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-27-2007 11:13 PM
тАО08-27-2007 11:13 PM
Re: CPU Missing
I shall try doing that but with my fingers crossed, hoping it does not fiddle with my current setup.
I just have 4 GB of RAM on the box.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-28-2007 02:28 PM
тАО08-28-2007 02:28 PM
Re: CPU Missing
I do have only 4GB MEM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-28-2007 02:36 PM
тАО08-28-2007 02:36 PM
Re: CPU Missing
If the system is multiprocessor, then install the kernel-smp packages, and upgrade the kernel-utils packages.
Install the newer kernel pacakge by rpm -i & rpm -u kernel-utils*. Installing the new kernel (rpm -i) will help to roll back to the old kernel by updaing the /boot/grub/grub.cong to the required one.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-28-2007 06:50 PM
тАО08-28-2007 06:50 PM
Re: CPU Missing
I have installed the recommended rpm's and it has made the entry into the grun.conf automatically . I havent got a chance to reboot the box yet, but i am hoping that this will resolved the issue. Thanks for all youe help
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-30-2007 07:11 PM
тАО08-30-2007 07:11 PM