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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. Niceness values range from -20 (most favorable to the process) to 19 (least favorable to the process). Mandatory arguments to long options are mandatory for short options too. -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
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report nice translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 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), renice(1) Full documentation at: <http://www.gnu.org/software/coreutils/nice> or available locally via: info '(coreutils) nice invocation' GNU coreutils 8.28 January 2018 NICE(1)
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