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diff --git a/info/slack.texinfo b/info/slack.texinfo deleted file mode 100644 index 692b7c9..0000000 --- a/info/slack.texinfo +++ /dev/null @@ -1,143 +0,0 @@ -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 - |