Source: http://www.makeuseof.com/tag/update-linux-kernel-improved-system-performance/

CHECK LATER: http://www.makeuseof.com/tag/5-reasons-update-kernel-linux/

--- DRAFT 8/30/16 - Adam

Why update to latest stable kernel?

• Performance improvements
• new major release approximately every two to three months

First you'll need to check which architecture your system uses: 32-bit or 64-bit. Use the uname command for this:

uname -a

Example output:

Linux localhost.localdomain 4.6.6-300.fc24.x86_64 #1 SMP Wed Aug 10 21:07:35 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

You will know that you are running a 64-bit system if you see x86_64. Otherwise, you have a 32-bit system. Keep this in mind when you go to download the newest kernel release.

Next, visit kernel.org to find the latest stable kernel. At the time of this writing (Aug. 30, 2016), the latest stable release was version 4.7.2.

---

Source: https://www.unixmen.com/install-latest-stable-kernel-centos-6-7/

Machine details:

cat /etc/os-release

NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

Installed Kernel info:

uname  -a

Linux localhost.localdomain 3.10.0-123.el7.x86_64 #1 SMP Mon Jun 30 12:09:22 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

Add ELREPO  repository

Import the Public Key:

rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

To install ELRepo for RHEL-7, SL-7 or CentOS-7:

rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm

To install ELRepo for RHEL-6, SL-6 or CentOS-6:

rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm

Start the new kernel installation:

yum --enablerepo=elrepo-kernel install kernel-ml-3.*

 Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirror.1000mbps.com
* elrepo: ftp.nluug.nl
* elrepo-kernel: ftp.nluug.nl
* epel: mirror.proserve.nl
* extras: mirror.1000mbps.com
* rpmforge: ftp.nluug.nl
* updates: mirror.widexs.nl
Resolving Dependencies
--> Running transaction check
---> Package kernel-ml.x86_64 0:3.18.5-1.el7.elrepo will be installed
--> Finished Dependency ResolutionDependencies Resolved==============================================================================================================================
Package                    Arch                    Version                              Repository                      Size
==============================================================================================================================
Installing:
kernel-ml                  x86_64                  3.18.5-1.el7.elrepo                  elrepo-kernel                   35 MTransaction Summary
==============================================================================================================================
Install  1 PackageTotal download size: 35 M
Installed size: 160 M
Is this ok [y/d/N]: Y

Accept and proceed by typing Y.

Reboot your system.