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Linux

Profiling in Linux Performance Tuning

Post date: December 18, 2005, 21:12 Category: Optimizing Views: 3463 Comments
Tutorial quote: This chapter covers several methods to measure execution time and real-time performance. The methods give different types of granularity, from the program’s complete execution time to how long each function in the program takes.
Debian

Boot Debian from an external firewire drive on PowerPc Mac

Post date: December 14, 2005, 19:12 Category: Installing Views: 2601 Comments
Tutorial quote: Messing with a boot process is a delicate matter even on a Mac. Note that the Debian installer will fail at some point during the procedure.
I offer no warranty and assume no responsibility for whatever loss or damage might be caused to your hardware, software or data.
There are other ways to boot Linux from an external firewire drive documented elsewhere on the net. See the Resources section.

Adding or removing peripherals like usb keys, digital cameras, other external HDs, cdroms etc, or installing/removing devfs, udev, and similar stuff might alter the way Linux sees the firewire drive, i suggest becoming familiar with supplying boot options to yaboot during the boot process. See Man pages of yaboot and yaboot.conf.
Linux

Benchmarking Maildir Delivery on Linux Filesystems

Post date: April 12, 2005, 07:04 Category: Benchmarks Views: 3028 Comments
Tutorial quote: The goal of this set of benchmarks is to determine which of the leading Linux filesystems (ext2, ext3, ReiserFS, and XFS) offer the best performance when used for accepting maildir deliveries. The resulting system should be a good balance of delivery and retrieval performance under potentially high concurrent filesystem load.
Debian

Aggregating network interfaces

Post date: February 12, 2006, 07:02 Category: Network Views: 3017 Comments
Tutorial quote: Using more than one hard drive to achieve better performance and fault tolerance is very common. Less well known is that it's also possible to aggregate more than one network interface into a single logical interface. In Linux, this is handled by the bonding driver. Benefits of doing this are much the same as the benefits of aggregating discs using RAID: if one device dies, your server carries on working and by using two devices in parallel, performance can be improved.
Ubuntu

How to Increase ext3 and ReiserFS filesystems Performance in Linux

Post date: May 14, 2007, 00:05 Category: System Views: 4675 Comments
Tutorial quote: This tutorial explains how to increase ext3 and ReiserFS filesystems Performance in Linux.The ext3 or third extended filesystem is a journalled file system that is commonly used by the Linux operating system. It is the default file system for many popular Linux distributions
Ubuntu

Watching Live-TV On Your Ubuntu Desktop With Zattoo

Post date: May 18, 2008, 11:05 Category: Desktop Views: 9122 Comments
Tutorial quote: Zattoo has developed a software program that allows you to watch TV on your computer. All you need is a broadband connection and a current operating system (Windows XP or Vista, Mac OS X, or Linux). The service is legal and free of charge.

OpenSUSE

Network Performance Fine Tuning in openSUSE & SUSE

Post date: October 8, 2008, 23:10 Category: Network Views: 4272 Comments
Tutorial quote: openSUSE and SUSE Linux sets default values for some of the network related Kernel parameters. With Kernel 2.6 (default in recent releases of openSUSE & SuSE Linux), there are some fine tuning you can do to improve Network performance and get that extra out of your system.
Unix+clones

Configuring Apache for Maximum Performance

Post date: February 12, 2006, 09:02 Category: Optimizing Views: 3840 Comments
Tutorial quote: Apache is an open-source HTTP server implementation. It is the most popular web server on the Internet; the December 2005 Web Server Survey conducted by Netcraft [1] shows that about 70% of the web sites on Internet are using Apache.

Apache server performance can be improved by adding additional hardware resources such as RAM, faster CPU, etc. But most of the time, the same result can be achieved by custom configuration of the server. This article looks into getting maximum performance out of Apache with the existing hardware resources, specifically on Linux systems. Of course, it is assumed that there is enough hardware resources - especially enough RAM that the server isn't swapping frequently. First two sections look into various Compile-Time and Run-Time configuration options. The Run-Time section assumes that Apache is compiled with prefork MPM. HTTP compression and caching is discussed next. Finally, using separate servers for serving static and dynamic contents is covered. Basic knowledge of compiling and configuring Apache and Linux are assumed.
Ubuntu

Monitoring Servers and Clients using Munin in Ubuntu

Post date: February 13, 2007, 18:02 Category: Network Views: 3996 Comments
Tutorial quote: Munin” means “memory”.Munin the tool surveys all your computers and remembers what it saw. It presents all the
information in in graphs through a web interface. Its mphasis is on plug and play capabilities. After completing a installation a high number of monitoring plugins will be playing with no more effort. Using Munin you can easily
monitor the performance of your computers, networks, SANs, and quite possibly applications as well. It makes it easy to determine “what’s different today” when a performance problem crops up. It makes it easy to see how you’re doing
capacity wise on all limited resources.
OSX

NSA Publically-Released OS X Secuirty Configuration (reload) Guide

Post date: October 21, 2006, 04:10 Category: Security Views: 5581 Comments
Tutorial quote: Apple Mac OS X
NSA has developed and distributed configuration guidance for Apple Operating Systems. This guidance can be used by US government and other entities as a security baseline.

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