Linux and other Unix-like operating systems use the term “swap” to describe both the act of moving memory pages between RAM and disk, and the region of a disk the pages are stored on. It is common to use a whole partition of a hard disk for swapping. However, with the 2.6 Linux kernel, swap files are just as fast as swap partitions. Now, many admins (both Windows and Linux/UNIX) follow an old rule of thumb that your swap partition should be twice the size of your main system RAM. Let us say I’ve 32GB RAM, should I set swap space to 64 GB? Is 64 GB of swap space really required? How big should your Linux / UNIX swap space be?
Consider this … the stupidest example of law. From the blog post:
French record labels have received the green light to sue four US-based companies that develop P2P applications, including the BitTorrent client Vuze, Limewire and Morpheus. Shareaza is the fourth application, for which the labels are going after the open source development platform SourceForge.
A sudden outburst of violent disk I/O activity can bring down your email or web server. Usually, a web / mysql or mail server serving millions and millions pages per months are prone to this kind of problem. Backup activity can increase current system load. To avoid this kind of sudden outburst problem, run your script with scheduling class and priority. Linux comes with various utilities to manage this kind of madness.
Explains Linux command for getting SCSI hard disk model / make, serial number and other information.
You can use old good hdparm to find out how fast is your hard disk under Linux. There is another tool called Bonnie++ which is a benchmark suite that is aimed at performing a number of simple tests of hard drive and file system performance. Then you can decide which test is important and decide […]