- bookworm 2:4.17.12+dfsg-0+deb12u1
- bookworm-backports 2:4.20.5+dfsg-1~bpo12+1
- testing 2:4.21.0+dfsg-1
- unstable 2:4.21.0+dfsg-1
PING_PONG(1) | CTDB - clustered TDB database | PING_PONG(1) |
NAME¶
ping_pong - measures the ping-pong byte range lock latency
SYNOPSIS¶
ping_pong {-r | -w | -rw} [-m] [-c] {FILENAME} {NUM-LOCKS}
DESCRIPTION¶
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's performance under stress.
FILENAME is a file on shared storage to use for byte range locking tests.
NUM-LOCKS is the number of byte range locks, so needs to be (strictly) greater than the number of nodes in the cluster.
OPTIONS¶
-r
-w
-m
-c
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¶
AUTHOR¶
This documentation was written by Mathieu Parent
COPYRIGHT¶
Copyright © 2002 Andrew Tridgell
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.
09/02/2024 | ctdb |