HowTo: Linux: Double your disk read performance in a single command

http://portal.itauth.com/2007/11/20/howto-linux-double-your-disk-read-performance-single-command

 

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Here's the magic to double sequential read performance:

[root@cyberman mydb]# blockdev --getra /dev/sdb
256
[root@cyberman mydb]# blockdev --setra 262144 /dev/sdb