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/*
* Copyright (C) 2006 Daniel Berrange, Red Hat Inc.
* Copyright (C) 2007 Will Cohen, Red Hat, Inc.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU General Public License v.2.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Print out the amount of time spent in the read and write systemcall
* when a process closes each file is closed. Note that the script needs
* to be running before the open operations occur for the script
* to record data.
*
* Format is:
* timestamp pid (executabable) wait4: time_us pid
*
* 155789807 4196 (ssh) wait4: 12 4197
* 158270531 3215 (bash) wait4: 5410460 -1
* 158270659 3215 (bash) wait4: 9 -1
* 158557461 2614 (sendmail) wait4: 27 -1
* 158557487 2614 (sendmail) wait4: 5 -1
*
*/
global start
global entry_wait4
global wait4_pid
function timestamp:long() {
return gettimeofday_us() - start
}
function proc:string() {
return sprintf("%d (%s)", pid(), execname())
}
probe begin {
start = gettimeofday_us()
}
probe syscall.wait4 {
t = gettimeofday_us(); p = pid()
entry_wait4[p] = t
wait4_pid[p]=$pid
}
probe syscall.wait4.return {
t = gettimeofday_us(); p = pid()
elapsed_time = t - entry_wait4[p]
printf("%d %s wait4: %d %d\n", timestamp(), proc(), elapsed_time,
wait4_pid[p])
delete entry_wait4[p]
delete wait4_pid[p]
}
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