latencytop-tui(8) [centos man page]

LATENCYTOP(8)						      System Manager's Manual						     LATENCYTOP(8)

NAME

       latencytop - a tool for developers to visualize system latencies

SYNOPSIS

       latencytop [--unknown] [processes...]

DESCRIPTION

       This manual page documents briefly the latencytop command.

       latencytop  is  a Linux* tool for software developers (both kernel and userspace), aimed at identifying where in the system latency is hap-
       pening, and what kind of operation/action is causing the latency to happen so that the code can be changed to avoid the worst latency  hic-
       cups.

       LatencyTOP  focuses on the cases where the applications want to run and execute useful code, but there's some resource that's not currently
       available (and the kernel then blocks the process). This is done both on a system level and on a per process level, so  that  you  can  see
       what's happening to the system, and which process is suffering and/or causing the delays.

       You  can  walk  the  processes by using the cursor keys. If you press s followed by a letter, then only active processes starting with that
       lettter are displayed and walked. If you press s followed by 0 then that filter is reset.

SEE ALSO

       powertop(1)
       The program is more fully described at http://www.latencytop.org

AUTHOR

       latencytop was written by Arjan van de Ven <arjan@linux.intel.com>.

       This manual page was written by Giacomo Catenazzi <cate@debian.org>, for the Debian project (but may be used by others).

								 November 9, 2008						     LATENCYTOP(8)

POWERTOP(8)							  powertop manual						       POWERTOP(8)

NAME

       powertop - a power consumption and power management diagnosis tool.

SYNOPSIS

       powertop [ options ]

DESCRIPTION

       powertop  is  a	program that helps to diagnose various issues with power consumption and power management. It also has an interactive mode
       allowing one to experiment with various power management settings. When invoking powertop without arguments powertop starts in  interactive
       mode.

OPTIONS

       --calibrate
	      runs  powertop  in  calibration mode. When running on battery, powertop can track power consumption as well as system activity. When
	      there are enough measurements, powertop can start to report power estimates. One can get	more  accurate	estimates  by  using  this
	      option to enable a calibration cycle. This will cycle through various display levels and USB device activities and workloads.

       --csv[=FILENAME]
	      generate	a  CSV report. If a filename is not specified then the default name "powertop.csv" is used. The CSV report can be used for
	      reporting and data analysis.

       --debug
	       run in "debug" mode.

       --extech=devnode
	      use the Extech Power Analyzer for measurements. This allows one to specify the serial device node of the serial to USB adaptor  con-
	      necting to the Extech Power Analyzer, for example /dev/ttyUSB0.

       --help
	       show the help message.

       --html[=FILENAME]
	      generate	an  HTML report. If a filename is not specified then the default name "powertop.html" is used. The HTML report can be sent
	      to others to help diagnose power issues.

       --iteration[=iterations]
	      number of times to run each test.

       --workload[=workload]
	      file to execute for workload.

       --quiet
	       supress stderr output.

       --time[=seconds]
	      generate a report for a specified number of seconds.

       --version
	      print version information and exit.

BUGS

       Send bug reports to <powertop@lists.01.org>

SEE ALSO

       The program is more fully described at https://01.org/powertop

AUTHOR

       powertop was written by	Arjan  van  de	Ven  <arjan@linux.intel.com>,  and  is	currently  maintained  by  Chris  E  Ferron  <chris.e.fer-
       ron@linux.intel.com>.

Linux								   June 1, 2012 						       POWERTOP(8)