During one of my recent missions I had the opportunity to install Red Hat 6.1 on a ESX Virtual Machine. During the installation process I got a strange message: “unable to read group information from repositories”. If you also encounter such a problem this article may help you..
Category Archives: Operation systems
Who never had to measure the disk performances on a system?
Speaking about Linux performance monitoring includes a significant part on disk performances. If you are facing applications or databases running slower than expected or than on other environments, you may take a look on the I/O performances.
This blog aims to provide to introduction to a pretty interesting tool, iozone…
I have been advising to use Perl for a long time in order to automate Oracle processes and operations. This week however, I tried for once to write a small procedure on a simple Linux shell (ksh and bash). This posting focuses on the shell internals and “nightmare” more than on Oracle related issues.
I’m pretty sure that most of you already struggled with some low performance systems. In order to analyse such cases several tools and utilities, like top, nmon, fuse or lsof are available under Linux. However trying to dig in processes analysis and looking for files and processes relations may be quite painful.
To get started with performance checks and analysis, a interesting utility is available: htop