misc improvements

Signed-off-by: Mattias Andrée <maandree@operamail.com>

1 files changed, 0 insertions, 143 deletions

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-1;2802;0c\input texinfo   @c -*-texinfo-*-
-
-@c %**start of header
-@setfilename slack.info
-@settitle slack
-@afourpaper
-@documentencoding UTF-8
-@documentlanguage en
-@finalout
-@c %**end of header
-
-
-@dircategory Miscellaneous
-@direntry
-* slack: (slack).                    Control your timer slack
-@end direntry
-
-
-@copying
-Copyright @copyright{} 2014 Mattias Andrée
-
-@quotation
-Permission is granted to copy, distribute and/or modify this document
-under the terms of the GNU Free Documentation License, Version 1.3 or
-any later version published by the Free Software Foundation; with no
-Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
-Texts. A copy of the license is included in the section entitled
-``GNU Free Documentation License''.
-@end quotation
-@end copying
-
-@ifnottex
-@node Top
-@top slack -- Control your timer slack
-@insertcopying
-@end ifnottex
-
-@titlepage
-@title slack
-@subtitle Control your timer slack
-@author by Mattias Andrée (maandree)
-
-@page
-@c @center `'
-@vskip 0pt plus 1filll
-@insertcopying
-@end titlepage
-
-@contents
-
-
-
-@menu
-* Overview::                        Brief overview of @command{slack}.
-* Invoking::                        Invocation of @command{slack}.
-* GNU Free Documentation License::  Copying and sharing this manual.
-@end menu
-
-
-
-@node Overview
-@chapter Overview
-
-Get the current timer slack value or spawn a new
-process with a new timer slack value. Timer slack
-is inherited to child processes.
-
-Timer slack allows the kernel to coalesce events so
-that the kernel does not need to which context as
-often. For example, if you have a lot timers
-@footnote{Timer slack affects more than timers.}
-but you only want 100 milliseconds accuracy (instead
-of 50 microsoconds accuracy which is the default) on
-your timers you can set your tiemr slack to 100
-milliseconds. If this is done the kernel can let a
-timer expire up to 100 milliseconds lot so it can
-expire at the same time as other timers that expire
-in the near future, this way the kernel will only
-have to which between kernel mode and user mode
-once. This can also have nice effects in user mode,
-if you have an @code{epoll} with @code{timerfd}:s,
-the epoll can return once and list multiple timers
-than expire within 100 milliseconds of each other.
-
-Note: real-time threads do not slack off.
-
-
-
-@node Invoking
-@chapter Invoking
-
-There are four ways to run @command{slack}:
-
-@table @command
-@item slack get
-Print the current process's timer slack in
-human-readable format.
-
-@item slack GET
-Print the current process's timer slack in
-machine-readable format, namely the timer
-slack in nanoseconds with digits only.
-
-@item slack reset [--fatal] [--] <command...>
-Start the specified command with default
-timer slack, which is determined by the
-timer slack of the proceess with PID 1.
-By default this is 50 microseconds.
-
-If @option{--fatal} is used, the specified
-command will not be executed if its timer
-slack cannot be set. If @option{--fatal}
-is not used, the specified command will be
-executed even if its timer slack cannot be
-set.
-
-@item slack <timer slack> [--fatal] [--] <command...>
-Start the specified command with a selected
-timer slack. The timer slack must be expressed
-as a integer optionally suffixed (without
-any blank space) by `n', `u' (or the micro
-character), `m', optionally in turn suffixed
-by `s', for nanoseconds, microseconds and
-milliseconds, respectively, `s' can be used
-for whole seconds. If no suffix is used,
-nanoseconds are assumed.
-
-If @option{--fatal} is used, the specified
-command will not be executed if its timer
-slack cannot be set. If @option{--fatal}
-is not used, the specified command will be
-executed even if its timer slack cannot be
-set.
-@end table
-
-
-
-@node GNU Free Documentation License
-@appendix GNU Free Documentation License
-@include fdl.texinfo
-
-@bye
-