76 lines
2.0 KiB
D
Executable File
76 lines
2.0 KiB
D
Executable File
#!/usr/sbin/dtrace -Cs
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/*
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* anonpgpid.d - anonymous memory paging info by process on CPU.
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* Written using DTrace (Solaris 10 3/05).
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*
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* This scripts may help identify which processes are affected by a system
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* with low memory, which is paging to the physical swap device. A report
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* of the process on the CPU when paging occured is printed.
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*
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* $Id: anonpgpid.d 8 2007-08-06 05:55:26Z brendan $
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*
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* USAGE: anonpgpid.d # hit Ctrl-C to end
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*
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* FIELDS:
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* PID Process ID
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* CMD Process name
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* D Direction, Read or Write
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* BYTES Total bytes during sample
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*
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* NOTES:
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*
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* This program is currently an approximation - often the process when writing
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* pages to swap will be "pageout" the pageout scanner, or "rcapd" the
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* resource capping daemon.
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*
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* THANKS: James Dickens
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*
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* COPYRIGHT: Copyright (c) 2006 Brendan Gregg.
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*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at Docs/cddl1.txt
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* CDDL HEADER END
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*
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* TODO:
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*
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* Track processes accurately. This is a little difficult - anonpgout
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* occurs asynchronously to the process, and events related to this don't
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* point back to the process.
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*
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* Author: Brendan Gregg [Sydney, Australia]
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*
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* 25-Jul-2005 Brendan Gregg Created this.
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* 18-Feb-2006 " " Last update.
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*/
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#include <sys/vnode.h>
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#pragma D option quiet
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dtrace:::BEGIN
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{
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printf("Tracing... Hit Ctrl-C to end.\n");
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}
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fbt::pageio_setup:entry
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/((args[2]->v_flag & (VISSWAP | VSWAPLIKE)) != 0)/
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{
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@total[pid, execname, args[3] & B_READ ? "R" : "W"] = sum(arg1);
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}
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dtrace:::END
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{
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printf("%6s %-16s %1s %s\n", "PID", "CMD", "D", "BYTES");
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printa("%6d %-16s %1s %@d\n", @total);
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}
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