62 lines
1.5 KiB
D
Executable File
62 lines
1.5 KiB
D
Executable File
#!/usr/sbin/dtrace -Zs
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/*
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* js_objcpu.d - measure JavaScript object creation on-CPU time using DTrace.
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* Written for the JavaScript DTrace provider.
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*
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* $Id: js_objcpu.d 63 2007-10-04 04:34:38Z brendan $
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*
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* This traces JavaScript activity from all browsers running on the system
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* with JavaScript provider support.
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*
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* USAGE: js_objcpu.d # hit Ctrl-C to end
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*
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* Class names are printed if available.
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*
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* COPYRIGHT: Copyright (c) 2007 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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* 09-Sep-2007 Brendan Gregg Created this.
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*/
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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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javascript*:::object-create-start
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{
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self->vstart = vtimestamp;
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}
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javascript*:::object-create-done
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/self->vstart/
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{
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this->oncpu = vtimestamp - self->vstart;
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@total = sum(this->oncpu);
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@dist[copyinstr(arg1)] = quantize(this->oncpu / 1000);
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self->vstart = 0;
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}
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dtrace:::END
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{
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normalize(@total, 1000000);
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printa("Total object creation on-CPU time (ms): %@d\n\n", @total);
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printf("Object creation on-CPU time distributions (us),\n");
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printa(@dist);
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}
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