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75 lines
2.1 KiB
Bash
Executable File
75 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2012 Robert N. M. Watson
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# All rights reserved.
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#
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# This software was developed at the University of Cambridge Computer
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# Laboratory with support from a grant from Google, Inc.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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# This script measures all time spent waiting on RPC replies for each
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# system call, and then generates a histogram of those times sorted by
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# system call name.
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#
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# Currently only supports NFSv3
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#
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# Usage: nfsclienttime
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#
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# Press Ctrl-C to exit and display statistics.
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#
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/usr/sbin/dtrace -n '
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#pragma D option quiet
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dtrace:::BEGIN
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{
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printf("Collecting data...press Ctrl-C to exit.\n");
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}
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syscall:::entry
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{
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self->count = 0;
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}
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nfsclient:nfs3::start
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{
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self->timestamp = timestamp;
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}
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nfsclient:nfs3::done
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{
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self->count += (timestamp - self->timestamp);
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}
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syscall:::return
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/self->count != 0/ {
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@syscalls[probefunc] = quantize(self->count);
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}
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'
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