Date: Sat, 9 Aug 2014 20:40:04 +0000 (UTC) From: John-Mark Gurney <jmg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r269765 - head/share/dtrace Message-ID: <53e68724.23ee.26a51c0a@svn.freebsd.org>
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Author: jmg Date: Sat Aug 9 20:40:03 2014 New Revision: 269765 URL: http://svnweb.freebsd.org/changeset/base/269765 Log: add my scripts to measure io latency per disk... Added: head/share/dtrace/disklatency (contents, props changed) head/share/dtrace/disklatencycmd (contents, props changed) Modified: head/share/dtrace/Makefile Modified: head/share/dtrace/Makefile ============================================================================== --- head/share/dtrace/Makefile Sat Aug 9 20:25:17 2014 (r269764) +++ head/share/dtrace/Makefile Sat Aug 9 20:40:03 2014 (r269765) @@ -12,7 +12,10 @@ SUBDIR= ${_toolkit} _toolkit= toolkit .endif -SCRIPTS= nfsclienttime hotopen +SCRIPTS= disklatency \ + disklatencycmd \ + hotopen \ + nfsclienttime SCRIPTSDIR= ${SHAREDIR}/dtrace Added: head/share/dtrace/disklatency ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/share/dtrace/disklatency Sat Aug 9 20:40:03 2014 (r269765) @@ -0,0 +1,67 @@ +#!/usr/sbin/dtrace -s +/*- + * Copyright 2014 John-Mark Gurney. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + * + */ + +#pragma D option quiet +#pragma D option dynvarsize=16m + +dtrace:::BEGIN +{ + printf("Tracing... Hit Ctrl-C to end.\n"); +} + +io:::start +{ + start_time[arg0] = timestamp; +} + +io:::done +/this->start = start_time[arg0]/ +{ + this->delta = (timestamp - this->start) / 1000; + @q[args[1]->device_name, args[1]->unit_number] = + lquantize(this->delta, 4000, 80000, 4000); + @max[args[1]->device_name, args[1]->unit_number] = max(this->delta); + @avg[args[1]->device_name, args[1]->unit_number] = avg(this->delta); + @stddev[args[1]->device_name, args[1]->unit_number] = stddev(this->delta); + start_time[arg0] = 0; +} + +tick-10s +{ + printa(" %s (%d), us:\n%@d\n", @q); + printa("max%s (%d), us:\n%@d\n", @max); + printa("avg%s (%d), us:\n%@d\n", @avg); + printa("stddev%s (%d), us:\n%@d\n", @stddev); + + clear(@q); + clear(@max); + clear(@avg); + clear(@stddev); +} Added: head/share/dtrace/disklatencycmd ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/share/dtrace/disklatencycmd Sat Aug 9 20:40:03 2014 (r269765) @@ -0,0 +1,72 @@ +#!/usr/sbin/dtrace -s +/*- + * Copyright 2014 John-Mark Gurney. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + * + */ + +#pragma D option quiet + +/* from http://www.mail-archive.com/dtrace-discuss@opensolaris.org/msg03755.html */ +#pragma D option aggsize=8m +#pragma D option bufsize=16m +#pragma D option dynvarsize=32m +/* +#pragma D option aggrate=0 +#pragma D option cleanrate=50Hz +*/ + +dtrace:::BEGIN +{ + printf("Tracing... Hit Ctrl-C to end.\n"); + dstart = timestamp; +} + +io:::start +{ + start_time[arg0] = timestamp; +} + +io:::done +/this->start = start_time[arg0]/ +{ + this->delta = (timestamp - this->start) / 1000; + @q[args[1]->device_name, args[1]->unit_number] = + lquantize(this->delta, 4000, 80000, 4000); + @max[args[1]->device_name, args[1]->unit_number] = max(this->delta); + @avg[args[1]->device_name, args[1]->unit_number] = avg(this->delta); + @stddev[args[1]->device_name, args[1]->unit_number] = stddev(this->delta); + start_time[arg0] = 0; +} + +dtrace:::END +{ + printf("total time, us: %d\n", (timestamp - dstart) / 1000); + printa(" %s (%d), us:\n%@d\n", @q); + printa("max%s (%d), us: %@d\n", @max); + printa("avg%s (%d), us: %@d\n", @avg); + printa("stddev%s (%d), us: %@d\n", @stddev); +}
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