Comparison: Linux Disk Scheduler

Posted on in Categories Hardware, Links, Linux, News last updated August 9, 2008

I’ve already written about changing the I/O scheduler for hard disk under Linux and avoiding sudden outburst of disk I/O using ionice utility. Google has sponsored [email protected] to take a close look at the disk schedulers in Linux, particularly when combined with RAID. They have now published their findings.

How To Avoid Sudden Outburst Of Backup Shell Script or Program Disk I/O on Linux

Posted on in Categories High performance computing, kernel, Linux, Storage, Troubleshooting, Tuning last updated June 3, 2008

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 (requests) per months are prone to this kind of problem. Backup activity can increase current system load too. 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.