Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   29550 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

PING_PONG(1)							  PING_PONG(1)

NAME
       ping_pong - measures the ping-pong byte range lock latency

SYNOPSIS
       ping_pong [options] <file> <num_locks>

       ping_pong [-r] [-w] [-m] [-c]

DESCRIPTION
       This measures the ping-pong byte range lock latency. It is especially
       useful on a cluster of nodes sharing a common lock manager as it will
       give some indication of the lock managers performance under stress.

OPTIONS
       -r
	   do reads

       -w
	   do writes

       -m
	   use mmap

       -c
	   validate the locks

EXAMPLES
       Testing lock coherence

		 ping_pong test.dat N

       Testing lock coherence with lock validation

		 ping_pong -c test.dat N

       Testing IO coherence

		 ping_pong -rw test.dat N

SEE ALSO
       https://wiki.samba.org/index.php/Ping_pong, ctdb(1), ctdbd(1)

COPYRIGHT/LICENSE
	   Copyright (C) Andrew Tridgell 2002

	   This program is free software; you can redistribute it and/or modify
	   it under the terms of the GNU General Public License as published by
	   the Free Software Foundation; either version 3 of the License, or (at
	   your option) any later version.

	   This program is distributed in the hope that it will be useful, but
	   WITHOUT ANY WARRANTY; without even the implied warranty of
	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU
	   General Public License for more details.

	   You should have received a copy of the GNU General Public License
	   along with this program; if not, see http://www.gnu.org/licenses/.

				  01/09/2013			  PING_PONG(1)

Vote for polarhome