latencytop(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)

IRQBALANCE(1)							    irqbalance							     IRQBALANCE(1)

NAME

       irqbalance -  distribute  hardware  interrupts across processors on a multiprocessor system

SYNOPSIS

       irqbalance [debug | oneshot]

DESCRIPTION

       irqbalance is a Linux daemon that distributes interrupts over the processors and cores you have in your computer system. The design goal of
       irqbalance is to do find a balance between power savings and optimal performance. To a large degree, the work irqbalance does is invisible
       to you; if irqbalance performs its job right, nobody will ever notice it's there or want to turn it off.

       For more information, visit the irqbalance homepage at http://www.irqbalance.org.

OPTIONS

       debug  Prints debug messages on stdout.

       oneshot
	      Only do a one shot setup.

ENVIRONMENT

       IRQBALANCE_BANNED_CPUS
	      Bitmap of CPUs that are banned from IRQ balancing

       IRQBALANCE_ONESHOT
	      Same as the oneshot option mentioned above.

       IRQBALANCE_DEBUG
	      Same as the debug option mentioned above.

       IRQBALANCE_BANNED_INTERRUPTS
	      Interrupt that don't get balanced as list (separation character doesn't matter). For example broken chipsets don't allow the timer
	      interrupt to be set to another CPU than the first, and with this option that policy can be applied.

SEE ALSO

       Homepage: http://www.irqbalance.org

AUTHOR

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

       This manpage was written by Bernhard Walle <bwalle@suse.de> based on the original manpage of the old irqbalance package and on the
       documentation available from the irqbalance hompage.

MAINTAINER

       Arjan van de Ven <arjan@linux.intel.com>

0.5.5								    2010-07-05							     IRQBALANCE(1)