O'Reilly logo

Linux in a Nutshell, 6th Edition by Robert Love, Stephen Figgins, Ellen Siever, Arnold Robbins

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Name

elvtune

Synopsis

elvtune [options] devices

System administration command. Set the latency in the elevator algorithm used to schedule I/O activities for the specified block devices. If no options are given, print the current settings for devices.

Options

-b n

Set the maximum coalescing factor allowed on writes when reads are pending to n.

-h

Print help message, then exit.

-r n

Set the maximum read latency (basically, the number of sectors to read before writes are allowed) to n. The default is 8192.

-v

Print version number, then exit.

-w n

Set the maximum write latency (sectors to write before allowing a read) to n. The default is 16,384.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required