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#!/usr/sbin/dtrace -Zs
/*
* rb_stat.d - Ruby operation stats using DTrace.
* Written for the Ruby DTrace provider.
*
* $Id: rb_stat.d 20 2007-09-12 09:28:22Z brendan $
*
* This traces activity from all Ruby programs on the system that are
* running with Ruby provider support.
*
* USAGE: rb_stat.d [interval [count]]
*
* FIELDS:
* EXEC/s Ruby programs executed per second, including
* those without Ruby provider support
* METHOD/s Methods called, per second
* OBJNEW/s Objects created, per second
* OBJFRE/s Objects freed, per second
* RAIS/s Raises, per second
* RESC/s Rescues, per second
* GC/s Garbage collects, per second
*
* The numbers are counts for the interval specified. The default interval
* is 1 second.
*
* If you see a count in "EXECS" but not in the other columns, then your
* Ruby software is probably not running with the DTrace Ruby provider.
* See Ruby/Readme.
*
* Filename and method names are printed if available.
*
* COPYRIGHT: Copyright (c) 2007 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
*
* 09-Sep-2007 Brendan Gregg Created this.
*/
#pragma D option quiet
#pragma D option defaultargs
inline int SCREEN = 21;
dtrace:::BEGIN
{
execs = methods = objnew = objfree = gc = raised = rescue = 0;
lines = SCREEN + 1;
interval = $1 ? $1 : 1;
counts = $2 ? $2 : -1;
secs = interval;
first = 1;
}
profile:::tick-1sec
{
secs--;
}
/*
* Print Header
*/
dtrace:::BEGIN,
profile:::tick-1sec
/first || (secs == 0 && lines > SCREEN)/
{
printf("%-20s %8s %8s %8s %8s %6s %6s %6s\n", "TIME", "EXEC/s",
"METHOD/s", "OBJNEW/s", "OBJFRE/s", "RAIS/s", "RESC/s", "GC/s");
lines = 0;
first = 0;
}
/*
* Tally Data
*/
proc:::exec-success
/execname == "ruby"/
{
execs++;
}
ruby*:::function-entry
{
methods++;
}
ruby*:::object-create-start
{
objnew++;
}
ruby*:::object-free
{
objfree++;
}
ruby*:::raise
{
raised++;
}
ruby*:::rescue
{
rescue++;
}
ruby*:::gc-begin
{
gc++;
}
/*
* Print Output
*/
profile:::tick-1sec
/secs == 0/
{
printf("%-20Y %8d %8d %8d %8d %6d %6d %6d\n", walltimestamp,
execs / interval, methods / interval, objnew / interval,
objfree / interval, raised / interval, rescue / interval,
gc / interval);
execs = methods = objnew = objfree = gc = raised = rescue = 0;
secs = interval;
lines++;
counts--;
}
/*
* End
*/
profile:::tick-1sec
/counts == 0/
{
exit(0);
}
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