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Full Discussion: Is nice command a myth?
Top Forums UNIX for Advanced & Expert Users Is nice command a myth? Post 302333846 by Perderabo on Tuesday 14th of July 2009 07:26:24 AM
Old 07-14-2009
The nice command breaks ties between processes that would otherwise be treated identically by the kernel. And it only effects processes while they are cpu bound. If a process is waiting for I/O to complete, it must wait regardless of how little niceness it has.

But I am a little tempted to rewrite readline to check the nice value. If the process has negative niceness, it would wait 5 seconds then issue a hurry-up message.... "Hey! Let's speed it up! I don't have all day!" Smilie
 

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NICE(1) 							   User Commands							   NICE(1)

NAME
nice - run a program with modified scheduling priority SYNOPSIS
nice [OPTION] [COMMAND [ARG]...] DESCRIPTION
Run COMMAND with an adjusted niceness, which affects process scheduling. With no COMMAND, print the current niceness. Nicenesses range from -20 (most favorable scheduling) to 19 (least favorable). -n, --adjustment=N add integer N to the niceness (default 10) --help display this help and exit --version output version information and exit NOTE: your shell may have its own version of nice, which usually supersedes the version described here. Please refer to your shell's docu- mentation for details about the options it supports. AUTHOR
Written by David MacKenzie. REPORTING BUGS
Report nice bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> Report nice translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
nice(2) The full documentation for nice is maintained as a Texinfo manual. If the info and nice programs are properly installed at your site, the command info coreutils 'nice invocation' should give you access to the complete manual. GNU coreutils 8.12.197-032bb September 2011 NICE(1)
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