mirror of
https://github.com/Stichting-MINIX-Research-Foundation/netbsd.git
synced 2025-09-10 23:56:52 -04:00
103 lines
2.9 KiB
D
Executable File
103 lines
2.9 KiB
D
Executable File
#!/usr/sbin/dtrace -s
|
|
/*
|
|
* nfswizard.d - nfs client activity wizard.
|
|
* Written using DTrace (Solaris 10 3/05).
|
|
*
|
|
* This examines activity caused by NFS client processes on the same server
|
|
* that you are running this script on. A detailed report is generated
|
|
* to explain various details of NFS client activity, including response
|
|
* times and file access.
|
|
*
|
|
* $Id: nfswizard.d,v 1.1.1.1 2015/09/30 22:01:06 christos Exp $
|
|
*
|
|
* USAGE: nfswizard.d # hit Ctrl-C to end sample
|
|
*
|
|
* COPYRIGHT: Copyright (c) 2005, 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
|
|
*
|
|
* 02-Dec-2005 Brendan Gregg Created this.
|
|
* 20-Apr-2006 " " Last update.
|
|
*/
|
|
|
|
#pragma D option quiet
|
|
|
|
dtrace:::BEGIN
|
|
{
|
|
printf("Tracing... Hit Ctrl-C to end.\n");
|
|
scriptstart = walltimestamp;
|
|
timestart = timestamp;
|
|
}
|
|
|
|
io:nfs::start
|
|
{
|
|
/* tally file sizes */
|
|
@file[args[2]->fi_pathname] = sum(args[0]->b_bcount);
|
|
|
|
/* time response */
|
|
start[args[0]->b_addr] = timestamp;
|
|
|
|
/* overall stats */
|
|
@rbytes = sum(args[0]->b_flags & B_READ ? args[0]->b_bcount : 0);
|
|
@wbytes = sum(args[0]->b_flags & B_READ ? 0 : args[0]->b_bcount);
|
|
@events = count();
|
|
}
|
|
|
|
io:nfs::done
|
|
/start[args[0]->b_addr]/
|
|
{
|
|
/* calculate and save response time stats */
|
|
this->elapsed = timestamp - start[args[0]->b_addr];
|
|
@maxtime = max(this->elapsed);
|
|
@avgtime = avg(this->elapsed);
|
|
@qnztime = quantize(this->elapsed / 1000);
|
|
}
|
|
|
|
dtrace:::END
|
|
{
|
|
/* print header */
|
|
printf("NFS Client Wizard. %Y -> %Y\n\n", scriptstart, walltimestamp);
|
|
|
|
/* print read/write stats */
|
|
printa("Read: %@d bytes ", @rbytes);
|
|
normalize(@rbytes, 1000000);
|
|
printa("(%@d Mb)\n", @rbytes);
|
|
printa("Write: %@d bytes ", @wbytes);
|
|
normalize(@wbytes, 1000000);
|
|
printa("(%@d Mb)\n\n", @wbytes);
|
|
|
|
/* print throughput stats */
|
|
denormalize(@rbytes);
|
|
normalize(@rbytes, (timestamp - timestart) / 1000000);
|
|
printa("Read: %@d Kb/sec\n", @rbytes);
|
|
denormalize(@wbytes);
|
|
normalize(@wbytes, (timestamp - timestart) / 1000000);
|
|
printa("Write: %@d Kb/sec\n\n", @wbytes);
|
|
|
|
/* print time stats */
|
|
printa("NFS I/O events: %@d\n", @events);
|
|
normalize(@avgtime, 1000000);
|
|
printa("Avg response time: %@d ms\n", @avgtime);
|
|
normalize(@maxtime, 1000000);
|
|
printa("Max response time: %@d ms\n\n", @maxtime);
|
|
printa("Response times (us):%@d\n", @qnztime);
|
|
|
|
/* print file stats */
|
|
printf("Top 25 files accessed (bytes):\n");
|
|
printf(" %-64s %s\n", "PATHNAME", "BYTES");
|
|
trunc(@file, 25);
|
|
printa(" %-64s %@d\n", @file);
|
|
}
|