diff options
Diffstat (limited to 'cddl/contrib/dtracetoolkit/Apps/nfswizard.d')
| -rwxr-xr-x | cddl/contrib/dtracetoolkit/Apps/nfswizard.d | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/cddl/contrib/dtracetoolkit/Apps/nfswizard.d b/cddl/contrib/dtracetoolkit/Apps/nfswizard.d new file mode 100755 index 000000000000..c63bc33dfa4e --- /dev/null +++ b/cddl/contrib/dtracetoolkit/Apps/nfswizard.d @@ -0,0 +1,102 @@ +#!/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 3 2007-08-01 10:50:08Z brendan $ + * + * 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); +} |