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What network issues should be monitored?
Network is the basis of the communication to your customers, page viewers. without network, computers are of no usage at all, arent they? But most of the guys always pay very little attention to the health of their networks. Generally, there are some type of networks issues should special pay attention:
Filed in: Networking, System Tuning
How to run 32bit application under x64 system
Sometimes you do not have access to source code or you really do not want to compile the code. Then Red Hat Enterprise Linux provides the service called ia32el. The ia32el package contains IA-32 Execution Layer platform which allows emulation of IA-32 binaries on IA-64.(i.e. it allows to run 32-bit [...]
Filed in: System Tuning, Virtualization
How about the memory limitations for linux?
As a system admin, you should aware of maximum amount of memory and CPU
that supported by Linux system. This is an essential task and you must
consider at least AMD and Intel platforms.
Intel x86
* Maximum CPUs: 32 (including logical CPUs)
* Maximum memory: 64GB
Filed in: Programming, System Tuning
Linux Disk Scheduler Benchmarking
[Dr. Peter Chubb, Project Research Officer - Gelato] Over the last six months, Google has sponsored Gelato to take a close look at the disk chedulers in Linux, particularly when combined with RAID.
We benchmarked the four standard Linux disk schedulers using several different tools (see our wiki for [...]
Filed in: Hardwares, System Tuning
Install Lighttpd PHP and XCache from Source on Linux
This is a short description on how to install a robust LAMP web service environment. Here we will not choose Apache, but Lighttpd instead.
Firstly, let’s make two directories, one for source code compiling, and the other one is the installation path.
Filed in: Applications, System Tuning
How to bind a certain process to specified core?
Taskset is used to set or retrieve the CPU affinity of a running process given its PID or to launch a new COMMAND with a given CPU affinity. Under latest version of Debian / Ubuntu / Redhat Linux taskset is installed by default with util-linux package.
Filed in: System Tuning
How to skip broken dependencies when Upgrading System
I made a mistake and added additional repo under CentOS / RHEL 5.x server. Now when I try to upgrade packages it gives me out broken ependencies / missing dependency error. How do I skip broken packages and apply updates to other installed software’s?
Filed in: System Tuning
Using alternative superblock to check ext3
Posted by joseph on September 8, 2009 · 3 Comments
After a long time running, your file systems may bacome rotted. There would be so many abnormal files, like pipes, sockets and damaged links, etc. But no warries please, they are only file system with some common isssues, what you need to do are often 3 steps:
Filed in: Applications, System Tuning
Throttle I/O Rate: Limit disk I/O for rsync
Question: I run a backup script called /home/admon/backup.sh which runs rsync command. However, rsync makes a lots of disk I/O and network I/O. I’d like to reduce both disk I/O and network I/O. I’ve 10Mbps server connection and 160GiB SATA hard disk. How do reduce disk I/O so that the entire [...]
Filed in: Applications, System Tuning
Anyway to retrieval file creation time
Is there any way to retrieval creation time for a specified file in Linux/Unix environment? Basically, you can not do that! By default EXT2/3 and Reiserfs do not hold the creation time, but only the last modified time. so if the file has been modified you’ll not find the created time. That means [...]
Filed in: System Tuning
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Web Hosting: Netcat really owns it's title: the swiss army knife!...
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Hassan: I have an E1A14 Errror. Im new to servers, kindly tell what is...
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joseph: Welcome Eric! Your website makes a lot of sense, thank you!...
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Eric Hammond: I've listed the commands necessary for each step in this article ...
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