| 1 | '\" t
|
|---|
| 2 | .\" Title: ping_pong
|
|---|
| 3 | .\" Author:
|
|---|
| 4 | .\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
|
|---|
| 5 | .\" Date: 01/27/2016
|
|---|
| 6 | .\" Manual: CTDB - clustered TDB database
|
|---|
| 7 | .\" Source: ctdb
|
|---|
| 8 | .\" Language: English
|
|---|
| 9 | .\"
|
|---|
| 10 | .TH "PING_PONG" "1" "01/27/2016" "ctdb" "CTDB \- clustered TDB database"
|
|---|
| 11 | .\" -----------------------------------------------------------------
|
|---|
| 12 | .\" * Define some portability stuff
|
|---|
| 13 | .\" -----------------------------------------------------------------
|
|---|
| 14 | .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|---|
| 15 | .\" http://bugs.debian.org/507673
|
|---|
| 16 | .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
|
|---|
| 17 | .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|---|
| 18 | .ie \n(.g .ds Aq \(aq
|
|---|
| 19 | .el .ds Aq '
|
|---|
| 20 | .\" -----------------------------------------------------------------
|
|---|
| 21 | .\" * set default formatting
|
|---|
| 22 | .\" -----------------------------------------------------------------
|
|---|
| 23 | .\" disable hyphenation
|
|---|
| 24 | .nh
|
|---|
| 25 | .\" disable justification (adjust text to left margin only)
|
|---|
| 26 | .ad l
|
|---|
| 27 | .\" -----------------------------------------------------------------
|
|---|
| 28 | .\" * MAIN CONTENT STARTS HERE *
|
|---|
| 29 | .\" -----------------------------------------------------------------
|
|---|
| 30 | .SH "NAME"
|
|---|
| 31 | ping_pong \- measures the ping\-pong byte range lock latency
|
|---|
| 32 | .SH "SYNOPSIS"
|
|---|
| 33 | .HP \w'\fBping_pong\fR\ 'u
|
|---|
| 34 | \fBping_pong\fR {\-r | \-w | \-rw} [\-m] [\-c] {\fIFILENAME\fR} {\fINUM\-LOCKS\fR}
|
|---|
| 35 | .SH "DESCRIPTION"
|
|---|
| 36 | .PP
|
|---|
| 37 | ping_pong measures the 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 manager\*(Aqs performance under stress\&.
|
|---|
| 38 | .PP
|
|---|
| 39 | FILENAME is a file on shared storage to use for byte range locking tests\&.
|
|---|
| 40 | .PP
|
|---|
| 41 | NUM\-LOCKS is the number of byte range locks, so needs to be (strictly) greater than the number of nodes in the cluster\&.
|
|---|
| 42 | .SH "OPTIONS"
|
|---|
| 43 | .PP
|
|---|
| 44 | \-r
|
|---|
| 45 | .RS 4
|
|---|
| 46 | test read performance
|
|---|
| 47 | .RE
|
|---|
| 48 | .PP
|
|---|
| 49 | \-w
|
|---|
| 50 | .RS 4
|
|---|
| 51 | test write performance
|
|---|
| 52 | .RE
|
|---|
| 53 | .PP
|
|---|
| 54 | \-m
|
|---|
| 55 | .RS 4
|
|---|
| 56 | use mmap
|
|---|
| 57 | .RE
|
|---|
| 58 | .PP
|
|---|
| 59 | \-c
|
|---|
| 60 | .RS 4
|
|---|
| 61 | validate the locks
|
|---|
| 62 | .RE
|
|---|
| 63 | .SH "EXAMPLES"
|
|---|
| 64 | .PP
|
|---|
| 65 | Testing lock coherence
|
|---|
| 66 | .sp
|
|---|
| 67 | .if n \{\
|
|---|
| 68 | .RS 4
|
|---|
| 69 | .\}
|
|---|
| 70 | .nf
|
|---|
| 71 | ping_pong test\&.dat N
|
|---|
| 72 |
|
|---|
| 73 | .fi
|
|---|
| 74 | .if n \{\
|
|---|
| 75 | .RE
|
|---|
| 76 | .\}
|
|---|
| 77 | .PP
|
|---|
| 78 | Testing lock coherence with lock validation
|
|---|
| 79 | .sp
|
|---|
| 80 | .if n \{\
|
|---|
| 81 | .RS 4
|
|---|
| 82 | .\}
|
|---|
| 83 | .nf
|
|---|
| 84 | ping_pong \-c test\&.dat N
|
|---|
| 85 |
|
|---|
| 86 | .fi
|
|---|
| 87 | .if n \{\
|
|---|
| 88 | .RE
|
|---|
| 89 | .\}
|
|---|
| 90 | .PP
|
|---|
| 91 | Testing IO coherence
|
|---|
| 92 | .sp
|
|---|
| 93 | .if n \{\
|
|---|
| 94 | .RS 4
|
|---|
| 95 | .\}
|
|---|
| 96 | .nf
|
|---|
| 97 | ping_pong \-rw test\&.dat N
|
|---|
| 98 |
|
|---|
| 99 | .fi
|
|---|
| 100 | .if n \{\
|
|---|
| 101 | .RE
|
|---|
| 102 | .\}
|
|---|
| 103 | .SH "SEE ALSO"
|
|---|
| 104 | .PP
|
|---|
| 105 | \fBctdb\fR(7),
|
|---|
| 106 | \m[blue]\fB\%https://wiki.samba.org/index.php/Ping_pong\fR\m[]
|
|---|
| 107 | .SH "AUTHOR"
|
|---|
| 108 | .br
|
|---|
| 109 | .PP
|
|---|
| 110 | This documentation was written by Mathieu Parent
|
|---|
| 111 | .SH "COPYRIGHT"
|
|---|
| 112 | .br
|
|---|
| 113 | Copyright \(co 2002 Andrew Tridgell
|
|---|
| 114 | .br
|
|---|
| 115 | .PP
|
|---|
| 116 | 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\&.
|
|---|
| 117 | .PP
|
|---|
| 118 | 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\&.
|
|---|
| 119 | .PP
|
|---|
| 120 | You should have received a copy of the GNU General Public License along with this program; if not, see
|
|---|
| 121 | \m[blue]\fB\%http://www.gnu.org/licenses\fR\m[]\&.
|
|---|
| 122 | .sp
|
|---|
