Kernel-PAE And CentOS 5 32bit

Dec 23, 2008

I have a dedicated box with following specs
Core2Quad 2.4ghz
2x500gb hdd
8gb ram

I installed 32bit centos5 in it ( because I use lxadmin ;lxadmin wont support 64bit)
Installed kernel-PAE successfully and rebooted the server. but the server still boots into the old kernel. I need the kernel-PAE to be booted, then only I can utilize full RAM. help me . below there is ssh logs
[root@t241 ~]# cat /proc/meminfo
MemTotal: 3357036 kB
MemFree: 3204984 kB
Buffers: 8148 kB
Cached: 109516 kB
SwapCached: 0 kB
Active: 33504 kB
Inactive: 103664 kB
HighTotal: 2477180 kB
HighFree: 2343972 kB
LowTotal: 879856 kB
LowFree: 861012 kB
SwapTotal: 6409892 kB
SwapFree: 6409892 kB
Dirty: 16 kB
Writeback: 0 kB
AnonPages: 19524 kB
Mapped: 7608 kB
Slab: 7732 kB
SReclaimable: 3964 kB
SUnreclaim: 3768 kB
PageTables: 400 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 8088408 kB
Committed_AS: 45232 kB
VmallocTotal: 114680 kB
VmallocUsed: 3992 kB
VmallocChunk: 110560 kB
[root@t241 ~]# uname -rm
2.6.25.10 i686
[root@t241 ~]# cat /etc/grub.conf
default 1
timeout 7
color cyan/blue white/blue
title=CentOS (2.6.18-92.1.22.el5PAE)
root (hd0,1)
kernel /boot/vmlinuz-2.6.18-92.1.22.el5PAE root=/dev/sda2 pci=nommconf
initrd /boot/initrd-2.6.18-92.1.22.el5PAE.img
title=linux
root (hd0,1)
kernel /boot/vmlinuz root=/dev/sda2 pci=nommconf
[root@t241 ~]# rpm -qa | grep kernel
kernel-2.6.18-8.el5
kernel-PAE-2.6.18-92.1.22.el5
kernel-headers-2.6.18-8.el5
[root@t241 ~]#

View 11 Replies


ADVERTISEMENT

CentOS 5x But 32bit Or 64bit

Sep 3, 2008

2 server configuration will look something like below. I heard that the 32bit kernel is better for the web server since I'll have cpanel on it. Anyone able to confirm this or should I just put 64bit on both of them?

Web Server
5420 2.5GHz (Dual QuadCore)
2x250GB SATA2 (RAID1)
2GB RAM

DB Server
5310 1.6GHz (Clovertown, DUAL processor)
2x73GB SAS (RAID1)
4GB RAM

View 3 Replies View Related

Fresh Installed Centos 5.2 (32bit) Load

Jul 9, 2008

Yesterday i got new Centos 5.2 server running.

For some reason, load shows 0.4-1.2.

There is no software installed on it yet, there is nothing actually running expect what came with fresh installation of that OS.

top - 16:42:22 up 2:34, 1 user, load average: 0.53, 0.75, 0.78
Tasks: 158 total, 1 running, 157 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.3%us, 0.0%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu3 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu4 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu5 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu6 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu7 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 4149456k total, 767820k used, 3381636k free, 66628k buffers
Swap: 2096472k total, 0k used, 2096472k free, 600680k cached

What should i check?

Kernel Version:
2.6.18-92.1.6.el5PAE

View 11 Replies View Related

Which CentOS Distribution I386 Or X86_64 For Intel Core 2 Duo 32bit Desktop

Apr 27, 2009

Which CentOS distribution i386 or x86_64 do I need for intel core 2 duo 32bit desktop.

View 5 Replies View Related

Centos + Kernel 2.6.9-34.0.2- How To Upgrade Kernel

Apr 29, 2007

Last year I ordered a new server with Centos 4.3 and it had the kernel kernel 2.6.9-34.0.2ELsmp installed. It runned fine and I didn't update any packages since then.

Today I started getting a problem where both mysqld and kswapd0 uses very high amounts of CPU, spiking up to 100% and my memory usage is at 99% all the time. The problem seems exactly the same as the one mentioned in this thread.

In that thread the exact same kernel is said to be insecure and to cause this problem. I also came across a centOS bug that reports this problem with high cpu, mem usage and mysql & kswapd0 consuming all resources.

In the linked thread the person solved the problem by upgrading to kernel 2.6.9-42 using rpms but others recommended a newer kernel or a custom compiled kernel for CentOS.

Apparently when they used yum it said 34.0.2 was the latest kernel.

What should I do to upgrade the kernel, which version should i upgrade to, and where do I get it from? I won't be able to compile a custom kernel and I've only installed basic rpm packages before.

View 5 Replies View Related

Install 32 Bit Pae Kernel On Centos

Apr 3, 2009

i have a 32bit centos running with 8 gigs, but only 7 is registering when i contacted support they told me

Your server does in fact have 8GB of physical memory however the reason it is not being recognized is due to the fact that you are using a 32 bit operating system. By default, the 8GB would be recognized if it were a 64 bit OS however on a 32 bit operating system, you must install and boot into the PAE kernel (physical address extension) for the 8GB to be recognized and utilized. The PAE kernel can be installed through yum when connected to your server as root over SSH. Once you have installed the kernel, you will need to reboot the server for these changes to take effect

i tried

yum pae install

yum pae kernel install

both didnt work can anyone give me a quick step by step guide on how to go about this.

View 12 Replies View Related

How To Build Kernel For Centos

Apr 3, 2007

how can i recompile kernel for centos with following options

option IPFIREWALL,IPDIVERT,IPFIREWALL_FORWARD?

View 2 Replies View Related

Kernel Update Needed For Centos 5

Nov 1, 2009

I am using cpanel My server runs with centos 5 With version 2.6.18-164.2.1.el5.plus

Does i need to keep updating kernal updates always for the server?

If so how i can update automatically?

View 8 Replies View Related

Openvz Kernel On Centos 64bit

May 21, 2009

I was Use Centos 64bit and when i install the openvz kernel and the openvzquota:

Quote:

yum -y install ovzkernel

yum -y install vzctrl vzquota vzpkg

I reebot my server and never boot up

I was planning to use a 8gb ram that's why i select 64bit.

View 14 Replies View Related

Upgrading Centos Kernel On Cpanel

Apr 5, 2009

Is there a correct way to do it?

View 2 Replies View Related

CentOs Kernel Upgrades....With Cpanel

Mar 29, 2009

I was wondering how I would go about ensuring my kernel is up to date on my vps. I am running centos and I have cpanel, so I am not sure if there is anything special that has to be done or avoided when running cpanel.

View 4 Replies View Related

How To Read CPU Temperature On CentOS 4.6 And 2.6.9 Kernel

Jul 30, 2008

how to read CPU Temperature on CentOS 4.6. and kernel 2.6.9 (CentOS kernel from yum)

View 4 Replies View Related

Recompile Centos Kernel 1000hz

Jun 1, 2007

I've setup a CS game server running centos 4 but I'm looking to recompile it with 1000hz.

Does anyone have any links to newbie friendly guides on how to do this without any problems?

View 7 Replies View Related

Centos 5 Kernel 2.6.19.2-grsec Irqbalance

Jun 9, 2007

When I try to compile kernel 2.6.19.2-grsec I get the following error.

kernel: irqbalance[1750]: segfault at 000001b202b70b20 rip 000001b2028f9cdb rsp 000077a8404178f0 error 6
kernel: grsec: signal 11 sent to /usr/sbin/irqbalance[irqbalance:1750] uid/euid:0/0 gid/egid:0/0, parent /bin/bash[bash:1749] uid/euid:0/0 gid/egid:0/0

I must have tryed to compile the kernel 20 different ways with or with out grsec and I still get the same irqbalance error.

My server is a
AMD Athlon 64 X2 4800+
2GB of DDR2 800 ram
x2 160GB hard drives soft ware raid 1
nvidia chipset mother board

View 4 Replies View Related

CentOS 5, CPanel 11, Kernel Buggy

Nov 18, 2007

(The box, 2 years now, never had issues before all you will read...)

I do have a box at the IP xxx.xxx.xxx.xxx, which on 15th Nov. was: AMD 4200+
with 300 GB hdd for OS, and CentOS 4.5 on it...

Because the system was facing few load problems of wrong installed applications, we decided to do a fresh OS reload to the latest OS version and
cPanel.

on 16th Nov, the box was up and running with CentOS 5, and cPanel 11.

the kernel is: 2.6.18-8.1.15.el5

After few hrs the box was done and IO restored all backups in it anbd all worked fine, I realized that I couldnt access cPanel, page was blank for
everything.

Also, most pages (except simple html) where showing internal error 500.

I did a reboot. probelm was fixed.

After few hrs, problem came up again...

I left ssh logged in to see whats wrong.

I found out that every few hrs, that issue was happening:

Message from syslogd@server at Sun Nov 16 11:47:21 2007 ...
server kernel: journal commit I/O error

Then, we had techs to check HDD for errors. they did fsck, and said disk has to be replaced (at this point, without wanting to offend anyone, I have to state that 90% of techs in datacenters, or at least at mine --won't name them, 99% you guess which DC it is...-- are just low paid students that don't know SIMPLE things...) so we told them to replace the HDD and do OS reload in new drive...

So, on 17th Nov. we had online a new HDD, 400 GB with CentOS 5 loaded in it, and cPanel 11...

After few hrs and all working and backups recovered, the issue came up again!

This time, with exactly same error, techs told us it may be RAM, so they replaced the RAM and we waited...

In 2,5 hrs, bang, it happens again, same error.

They say, it might be the sata cable...

we replace it...

AGAIN ERROR.

we ask them to loook at it seriously, and after lot pressure, to avoid case that mo/bo or controller is wrong, they do upgrade us in a BRAND NEW colocated box, which was this time: Intel Core 2 DUO, 6300, with brand new 500 GB HDD and new RAM.

We recover in the new box the backups.

Box is online today at 18th Nov...

and the issue comes up again!

Message from syslogd@server at Sun Nov 18 11:47:21 2007 ...
server kernel: journal commit I/O error

I ask them what the **** is going on now and why after having all hardware replaced with new, and all OS reinstalled clean on new drives and new devices, 3 times, why we have again the same error...

And their response: power cable was loose, we replaced power cable...

Guys, sorry, this is really DUMP... loose cable cannot give that error...

and the error... continues!

Also, at this point, I have to let you know, that when this error comes up, (Message from syslogd@server at Sun Nov 18 11:47:21 2007 ...

server kernel: journal commit I/O error) the filesystem becomes READ-ONLY and
nothing gets affected, if we do a cold reboot by reset button, it comes up
again and all work PERFECT, until the issue comes back again.....

I am desperate with that, let me know what I have to do!

View 3 Replies View Related

CentOS 5 - Problem Installing OpenVZ Kernel

Jun 22, 2008

Just to make things clear, i am not new at setting up VPS nodes, i have set up all of my servers with the HyperVM/OpenVZ setup and they work perfectly, but im having a problem with a new server.

Just received my new server, installed HyperVM-Slave, rebooted but the OpenVZ kernel was not installed for some reason, so i manually installed the OpenVZ Kernel using the RPM as yum seemed to install the wrong kernel.

I then installed the kernel using RPM and got this error at the end of installation:

grubby: unable to open /dev/hda: No such file or directory
grubby: unable to open /boot/boot.b: No such file or directory
grubby fatal error: unable to find a suitable template

I have never encountered this error with any of my other servers before...

Also after installation everything seems to be correct. /etc/grub.conf has the new OpenVZ kernel displayed, and default is set to 0, so upon startup it should be booting the correct kernel, but the thing is, when i reboot the machine the default kernel is loaded even though the grub.conf is configured to load the OpenVZ Kernel.

Im thinking that this may be due to the error i got when installing the kernel.

View 1 Replies View Related

CentOS 5.3 Default Kernel RealTek Support

May 15, 2009

I'm not sure if anyone else has come across this but I'm sure you are all aware that CentOS 5.3 default kernel comes with realtek support.

But the default realtek drivers have a bug in them when it slows down upload and downloads drastically and shows ping times above 2000+ ms in the same datacenter.

A fix for this is simply upgrading the kernel to the latest version available (2.6.29) with realtek driver support.

View 3 Replies View Related

HOW TO: CentOS Issue .. Kernel Update - SAS Drive

Apr 17, 2008

I installed CentOS 5 with SAS drive. But i forgot install kernel-PAE for more 4GB RAM. (i'm using 8GB RAM).

But now when i trying to install kernel-PAE or update kernel. I have issue with hda and fd0 ...

"WARNING: No module megasr found for kernel"

When i 'cat /var/log/messages' i got:

kernel: end_request: i/o error, dev fd0,sector 0
kernel: hda: packet command error: status=0x51 { DriveReady SeekComplete Error }
kernel: hda: packet command error: error=0x54 { AbortedCommand LastFailedSense=0x05 }

I tried to 'google' they to find the solution, but now i still not find out ...
I'll try to reload OS. After reload OS, if i dont have floppy disk, how can i update kernel with no error?

View 2 Replies View Related

No Module Uhci-hcd Found For Kernel 2.6.24.2 On CENTOS 5

Feb 18, 2008

I trying to compile new kernel on centos 5 and every time after "mkinitrd /boot/initrd-2.6.24.2.img 2.6.24.2" I have error:

No module uhci-hcd found for kernel 2.6.24.2, aborting.

View 3 Replies View Related

Whats The Latest Stable Kernel For Centos OS 5 Server

Oct 15, 2007

Can someone tell me which one is the latest stable kernel version available for centos 5 that should be running on the server?

Is
2.6.21.5-JS-grsec #1 SMP Thu Jul 12 20:38:34 CST 2007 i686 athlon i386 GNU/Linux.

Outdated?

View 3 Replies View Related

32bit Vs. 64bit

Mar 3, 2008

I have been trying to research this but I cant seem to find an answer.

The big question I am trying to figure out is the comparison in clock speed for different processor bits.

For example, a 32 bit Pentium 4 at 3.2ghz versus a 64 bit AMD Athlon 2.0 Ghz?

View 6 Replies View Related

32bit Or 64bit VPS

Feb 29, 2008

while setting up a server which will host VPS's. Currently I have CentOS 5.1 x64 as the host OS, and I'm playing around with Xen for VPS's. Would you recommend a 32bit VPS, or a 64bit VPS?

View 7 Replies View Related

Vmware 32bit To 64bit

Jul 8, 2009

how i can migrate vmware 32bit to 64bit without delete any vps... ?

View 1 Replies View Related

Witch OS 32bit Or 64bit

Dec 5, 2008

Witch OS 32bit or 64bit

I have a server with follow specifications:

Intel Celeron D/215/220
1.20+ GHz
1 Go DDR

Witch version of Centos is the best for this server. Centos 32bit or 64bit...

View 12 Replies View Related

Choosing 32bit Versus 64bit OS

Jun 13, 2008

I'm in the process of preparing to install CentOS 5 on my server, and was wondering whether most people recommend going with the 64bit version or sticking with 32bit. My server's CPU is 64-bit capable (Xeon 3060 at SoftLayer), and I have previously run CentOS 4.4 64bit on it, though I did have some struggles from time to time getting things to work (following setup guides that tend to assume 32bit more often than not).

I'll be running just a standard setup of PHP 5, MySQL 5, and Apache 2, powering several moderate-traffic sites that run on the Drupal CMS (e.g. about 7000-10000 visitors per day total, though hopefully more in the future of course). I don't plan on running a control panel other than Webmin, though I might get DirectAdmin or similar in the future to make hosting some friends/clients a bit simpler.

Will going with 64bit offer any worthwhile advantage with this setup?

View 10 Replies View Related

64bit Guest Os On 32bit Host

Sep 9, 2007

I was surprised when hypervm brought in a 64bit guest os. Maybe it's me..but...is this a good idea? Maybe it works fine.. it just does not *seem* like it would.

View 9 Replies View Related

RHEL 5 - 32bit V 64bit Running Cpanel 11 For Hosting

Jul 8, 2008

As cPanel is an integral part of server hosting and has the ability of compiling Apache 1.3.x with PHP4 (cgi) and PHP5 (dso) on your server OS.

Does anyone know or have baselines/benchmarks for which performs better generally for hosting: 32bit or 64bit RedHat 5 when cPanel 11 has compiled for the Apache and php mentioned above on either of these OS editions? (assume latest versions of apache/php4/5)

I was wondering if 32bit performed better or 64bit on a quad core Xeon. Don't forget PHP is compiled for prefork and not multi-threading for Apache 1.3.41 (which are considered legacy 32bit forked apps compiled against 64bit OS).

Or rephrased, could i be hampering performance by running it on a 64bit OS on a Xeon (X3210) or improving performance? I'd assume 64bit would offer better all round processing power, or is this a misconception.

I recently decided to get a server on RedHat Enterprise 5 X86_64 (64bit), when i wondered if 32bit version would have provided better performance and been the better options for compatibility.

View 0 Replies View Related

[kernel: Kernel BUG At Mm/rmap.c:479] Any Idea What This Is?

Mar 29, 2007

we have one box in hivelocity.net that has been down so many times this month that we were forced to remove links to siteuptime where we were once so proud of having a 99.7% uptime for 3 years in theplanet.

syslog shows that just before crashing, these entries were made:

kernel: kernel BUG at mm/rmap.c:479
kernel: invalid operand:0000 [#1]

dmesg also shows this:

...
Brought up 2 CPUs
zapping low mappings.
checking if image is initramfs... it is
Freeing initrd memory: 482k freed
NET: Registered protocol family 16
PCI: PCI BIOS revision 2.10 entry at 0xf9f20, last bus=1
PCI: Using configuration type 1
mtrr: v2.0 (20020519)
mtrr: your CPUs had inconsistent fixed MTRR settings
mtrr: probably your BIOS does not setup all CPUs.
mtrr: corrected configuration.
...

i've googled these messages and they point to ram problems.

hivelocity.net claims to have done diagnostics on the box and that there were no problems reported.

they said this is a result of a sys configuration problem made by us.

any ideas?

View 8 Replies View Related

Kernel Headers For Virtuozzo Kernel

May 20, 2009

running centos/virtuozzo 2.6.18-028stab062.3

when i configure vmware it asks at one point for kernel header files. where would i find them to match the current kernel?

i asked at parallels forums but help there is very scarce. i checked openVZ repositories and they dont yet have headers for this version.

what are my options? i have one last windows machine left and want to run it in VMware.

View 0 Replies View Related

Kernel Source Install Help Needed On Fc6 X64I Am Trying To Install The Kernel Source.

May 13, 2007

I am trying to install the kernel source.
I have downloaded kernel-2.6.20-1.2948.fc6.src.rpm
I am using fedora 6 64bit.
here are my current kernels:

kernel-headers-2.6.20-1.2948.fc6
kernel-devel-2.6.20-1.2944.fc6
yum-kernel-module-1.0.3-1.fc6
kernel-2.6.20-1.2944.fc6
kernel-devel-2.6.20-1.2948.fc6
kernel-2.6.20-1.2948.fc6


here is what I seen when I installed kernel-2.6.20-1.2948.fc6.src.rpm

rpm -ivh kernel-2.6.20-1.2948.fc6.src.rpm
1:kernel warning: user brewbuilder does not exist - using root
warning: group brewbuilder does not exist - using root
warning: user brewbuilder does not exist - using root
########################################### [100%]
warning: user brewbuilder does not exist - using root
warning: group brewbuilder does not exist - using root


then when I ran:
rpmbuild -bp --target=$(uname -m) /usr/src/redhat/SPECS/kernel-2.6.spec

I seen this error:
+ Arch=x86_64
+ make ARCH=x86_64 nonint_oldconfig
In file included from /usr/include/sys/socket.h:35,
from /usr/include/netinet/in.h:24,
from /usr/include/arpa/inet.h:23,
from scripts/basic/fixdep.c:117:
/usr/include/bits/socket.h:310:24: error: asm/socket.h: No such file or directory
make[1]: *** [scripts/basic/fixdep] Error 1
make: *** [scripts_basic] Error 2
error: Bad exit status from /var/tmp/rpm-tmp.93770 (%prep)


I need to have this installed to get a app installed etc...
suggestions or ideas?
thanks

View 2 Replies View Related

Difference Between CentOs 5.0 And Centos 4.5? Both With Plesk

Oct 1, 2007

What is the difference between CentOs 5.0 and Centos 4.5? (Both contains Plesk)

Would CentOS 5 contain more updates and fixes? CentOS 4.5 be more stable?

View 0 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved