lm-profiler(8) [debian man page]
LM-PROFILER(8) System Manager's Manual LM-PROFILER(8) NAME
/usr/sbin/lm-profiler - laptop mode profiler SYNOPSIS
/usr/sbin/lm-profiler DESCRIPTION
This manual page documents briefly the /usr/sbin/lm-profiler command. lm-profiler is a tool for profiling disk operations. It is a part of laptop mode tools and is useful only in relation to rest of laptop mode tools. It helps you to detect programs and services that use up system resources and that cause disk activity, and it allows you to disable them when laptop mode is active. When you start lm-profiler, it will execute a "profiling run", which can take some time. Start lm-profiler when you are working on batter- ies, preferably, because that will allow it to analyze the actual situation that it is supposed to optimize. During the profiling run, you can use your system normally; however, any disk activity caused by your actions will end up in the profiler's results. When the profiling run is finished, you will be presented with a list of programs that deserve your attention, either because they listen on a network (which is not usually useful when you are working offline) or because they caused disk activity in a disk-spindown-unfriendly pattern. When lm- profiler can guess an init script that belongs to a program, it presents you with the opportunity to disable the program when you are work- ing on battery. It does this by placing a link to the init script in /etc/laptop-mode/batt-stop. Any programs that lm-profiler cannot find an init script for is simply reported, so that you can stop the program manually if you want to. WARNING ABOUT DISABLING PROGRAMS: It may not be safe to disable some programs. They may be needed for proper operation of your system. Dis- able services only if you know what they do and why you don't need them. FILES
/etc/lm-profiler.conf lm-profiler retrieves its profiling rules from this file. SEE ALSO
lm-profiler.conf(8). laptop-mode.conf(8). daemons.conf(8). AUTHOR
This manual page was written by Bart Samwel (bart@samwel.tk) and Jan Polacek (jerome@ucw.cz) for the Debian system (but may be used by oth- ers). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by the Free Software Foundation. On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL. LM-PROFILER(8)
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profiler(n) Tcl Profiler profiler(n) __________________________________________________________________________________________________________________________________________________ NAME
profiler - Tcl source code profiler SYNOPSIS
package require Tcl 8.3 package require profiler ?0.3? ::profiler::init ::profiler::dump pattern ::profiler::print ?pattern? ::profiler::reset ?pattern? ::profiler::suspend ?pattern? ::profiler::resume ?pattern? ::profiler::sortFunctions key _________________________________________________________________ DESCRIPTION
The profiler package provides a simple Tcl source code profiler. It is a function-level profiler; that is, it collects only function-level information, not the more detailed line-level information. It operates by redefining the Tcl proc command. Profiling is initiated via the ::profiler::init command. COMMANDS
::profiler::init Initiate profiling. All procedures created after this command is called will be profiled. To profile an entire application, this command must be called before any other commands. ::profiler::dump pattern Dump profiling information for the all functions matching pattern. If no pattern is specified, information for all functions will be returned. The result is a list of key/value pairs that maps function names to information about that function. The information about each function is in turn a list of key/value pairs. The keys used and their values are: totalCalls The total number of times functionName was called. callerDist A list of key/value pairs mapping each calling function that called functionName to the number of times it called function- Name. compileTime The runtime, in clock clicks, of functionName the first time that it was called. totalRuntime The sum of the runtimes of all calls of functionName. averageRuntime Average runtime of functionName. descendantTime Sum of the time spent in descendants of functionName. averageDescendantTime Average time spent in descendants of functionName. ::profiler::print ?pattern? Print profiling information for all functions matching pattern. If no pattern is specified, information about all functions will be displayed. The return result is a human readable display of the profiling information. ::profiler::reset ?pattern? Reset profiling information for all functions matching pattern. If no pattern is specified, information will be reset for all func- tions. ::profiler::suspend ?pattern? Suspend profiling for all functions matching pattern. If no pattern is specified, profiling will be suspended for all functions. It stops gathering profiling information after this command is issued. However, it does not erase any profiling information that has been gathered previously. Use resume command to re-enable profiling. ::profiler::resume ?pattern? Resume profiling for all functions matching pattern. If no pattern is specified, profiling will be resumed for all functions. This command should be invoked after suspending the profiler in the code. ::profiler::sortFunctions key Return a list of functions sorted by a particular profiling statistic. Supported values for key are: calls, exclusiveTime, compile- Time, nonCompileTime, totalRuntime, avgExclusiveTime, and avgRuntime. The return result is a list of lists, where each sublist con- sists of a function name and the value of key for that function. BUGS, IDEAS, FEEDBACK This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category profiler of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for either package and/or documentation. KEYWORDS
performance, profile, speed profiler 0.3 profiler(n)