[BlueOnyx:00390] Re: 4gb on Blueonyx

[Gerald Waugh]

Gerald Waugh wrote Tuesday, January 27, 2009 6:01 AM
> 
> Chris Gebhardt - VIRTBIZ Internet wrote Monday, January 26, 
> 2009 9:57 PM
> > 
> > Gerald Waugh wrote:
> > > I note that the servers I config with blueonyx and have 
> 4GB RAM Are 
> > > running; 2.6.18-92.1.22.el5 kernel And only show;
> > > [root at cbw ~]# cat /proc/meminfo
> > > MemTotal:      2836476 kB
> > > 
> > > This particular server is running a dual core E6600 
> processor. and 
> > > cat /proc/cpuinfo does show two processors running. But I see the 
> > > same thing on servers running Pentium 4 processors.
> > > 
> > > With NuOnce install cd, it appears to be correct, but has
> > an smp kernel
> > > Is there a way to install an smp kernel through yum?
> > > I prefer not to install kernel-xen.i686 as someone suggested.
> > 
> > All CentOS-5 kernels are smp enabled.
> > 
> > from http://wiki.centos.org/FAQ/CentOS5#head-d70935212ce3b7b072b007
> 5c1807a4bd3ea175b7
> 
> > CentOS 5 provides the following kernel packages:
> 
> > kernel: Contains the 'normal' kernel. This kernel includes 
> support for
> 
> > both UP and SMP machines.
> 
> > kernel-PAE (x86-only): Contains a kernel with support for 64GB of
> memory 
> > on x86 systems through Physical Address Extensions (PAE). Only x86
> CPUs 
> > that support PAE can run this kernel. This kernel is 
> provided because
> > x86 systems can't address more than 4GB of memory without PAE
> extensions.
> 
> > kernel-xen: Contains a Linux kernel that runs on the Xen hypervisor,
> for 
> > both privileged (dom0) and unprivileged (domU) domains. The 
> Xen kernel
> 
> > is compiled with PAE support.
> 
> > Additional kernels that have some more options enabled are 
> available 
> > through the CentOSPlus repository.
> 
> Chris,
> 
> Good information.
> What do you suggest to use on the machine so that it uses all RAM?
> 
> Gerald

Excuse answering my own post!
I ran "yum install kernel-PAE.i686"
did a reboot, which didn't help as grub.conf changed from default=0 to
default=1, 1 being the el5 vanilla kernel.
Edited "/boot/grub/grub.conf"
Which had the "kernel /vmlinuz-2.6.18-92.1.22.el5PAE ro
root=/dev/VolGroup00/root vga=791"
But, "default=1", I changed to "default=0" which is where the "PAE"
kernel is.
rebooted and now;
[root at cbw ~]# cat /proc/meminfo | grep Total
MemTotal:      4136972 kB
Note: that I previously added "vga=791" to the el5 kernel and it did
carry over to the new grub.conf
      this gives a high reolution display on the vga console port.

HTH others
Gerald