[BlueOnyx:00625] Re: 4gb on Blueonyx

[Ken Marcus - Precision Web Hosting, Inc.]

----- Original Message ----- 
From: "Gerald Waugh" <gwaugh at frontstreetnetworks.com>
To: "'BlueOnyx General Mailing List'" <blueonyx at blueonyx.it>
Sent: Tuesday, January 27, 2009 5:36 AM
Subject: [BlueOnyx:00390] Re: 4gb on Blueonyx


> 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
> 


Gerald

This works for me also.
Thanks for the helpful info on this. 


----
Ken Marcus
Ecommerce Web Hosting by
Precision Web Hosting, Inc.
http://www.precisionweb.net