#!/usr/sbin/dtrace -Cs
/*
* anonpgpid.d - anonymous memory paging info by process on CPU.
* Written using DTrace (Solaris 10 3/05).
*
* This scripts may help identify which processes are affected by a system
* with low memory, which is paging to the physical swap device. A report
* of the process on the CPU when paging occured is printed.
*
* 18-Feb-2006, ver 0.51 (early release. check for newer versions)
*
* USAGE: anonpgpid.d # hit Ctrl-C to end
*
* FIELDS:
* PID Process ID
* CMD Process name
* D Direction, Read or Write
* BYTES Total bytes during sample
*
* NOTES:
*
* This program is currently an approximation - often the process when writing
* pages to swap will be "pageout" the pageout scanner, or "rcapd" the
* resource capping daemon.
*
* THANKS: James Dickens
*
* COPYRIGHT: Copyright (c) 2006 Brendan Gregg.
*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at Docs/cddl1.txt
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* CDDL HEADER END
*
* TODO:
*
* Track processes accurately. This is a little difficult - anonpgout
* occurs asynchronously to the process, and events related to this don't
* point back to the process.
*
* Author: Brendan Gregg [Sydney, Australia]
*
* 25-Jul-2005 Brendan Gregg Created this.
*/
#include <sys/vnode.h>
#pragma D option quiet
/* print header */
dtrace:::BEGIN
{
printf("Tracing... Hit Ctrl-C to end.\n");
}
fbt::pageio_setup:entry
/((args[2]->v_flag & (VISSWAP | VSWAPLIKE)) != 0)/
{
@total[pid, execname, args[3] & B_READ ? "R" : "W"] = sum(arg1);
}
dtrace:::END
{
printf("%6s %-16s %1s %s\n", "PID", "CMD", "D", "BYTES");
printa("%6d %-16s %1s %@d\n", @total);
}