62 lines
2.0 KiB
Bash
Executable File
62 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# Copyright (c) 2012 George V. Neville-Neil
|
|
# All rights reserved.
|
|
#
|
|
# This software was developed at the University of Cambridge Computer
|
|
# Laboratory with support from a grant from Google, Inc.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
# SUCH DAMAGE.
|
|
#
|
|
# $FreeBSD$
|
|
#
|
|
# The hotopen D script periodically outputs table of which UIDs
|
|
# are opening files. This is a very quick way to find out if
|
|
# a paritcular user is thrashing a system with rapid calls to
|
|
# open/close.
|
|
#
|
|
# Usage: hotopen
|
|
#
|
|
|
|
/usr/sbin/dtrace -n '
|
|
#pragma D option quiet
|
|
BEGIN
|
|
{
|
|
printf("Files opened per UID in the last second.\n");
|
|
}
|
|
|
|
syscall::open:entry
|
|
{
|
|
@files[uid] = count();
|
|
output = 1;
|
|
}
|
|
|
|
tick-1sec
|
|
/output != 0/
|
|
{
|
|
printf("%-20Y \n", walltimestamp);
|
|
printa("uid %d\tcount %@d\n", @files, @files);
|
|
trunc(@files);
|
|
output = 0;
|
|
}
|
|
'
|