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There is just one week left until Ubuntu 9.10 "Karmic Koala" will be released, but is it worth the upgrade if you are running a netbook? From our testing of the development releases, it is most certainly worth the upgrade, especially when compared to Ubuntu 9.04 with its buggy Intel driver stack that caused many problems for Atom netbook users.
The sar command collect, report, or save UNIX / Linux system activity information. It will save selected counters in the operating system to the /var/log/sa/sadd file. From the collected data, you get lots of information about your server...
Most Linux users are familiar with the top command. Top shows you a list of processes on your system and provides a ton of useful information such as their CPU usage and owner. Unfortunately, this isn’t always enough data and many people don’t know where to turn next.
Monitoring and analyzing performance is an important task for any sysadmin. Disk I/O bottlenecks can bring applications to a crawl. What is an IOP? Should I use SATA, SAS, or FC? How many spindles do I need? What RAID level should I use? Is my system read or write heavy? These are common questions for anyone embarking on an disk I/O analysis quest.
A good password has the problem of being difficult to remember. And sometimes you might need to get in to a system where the root password is long forgotten (or left with the system administrator before you).
Bootchart is an extremely simple, extremely handsome application that allows you to profile your Linux boot process, to measure the loading times of different services, to compare kernels and distributions, to identify bottlenecks and improve the performance of your system, and then to display the results in a professional-looking chart.
Just days after accusations had been made against IBM and a ban put in place, IBM was cleared of all charges and the ban was lifted. The Register was quick with its report and so was The Inquirer.
System administrators need to keep an eye on their servers to make sure things are running smoothly. If they find a problem, they need to see when it started, so investigations can focus on what happened at that time.
