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/*
* Linux DTrace
* Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*/
#!/usr/sbin/dtrace -s
# pragma D option quiet
/*
* SYNOPSIS
* sudo ./508aggregations-normalize.d
*
* DESCRIPTION
* Here, is another use of trunc() -- with an additional
* argument to focus attention on the top values.
*/
BEGIN
{
treport = timestamp;
ttick = timestamp;
}
/* add the number of nanoseconds since the last tick */
tick-100hz
{
@ = sum(timestamp - ttick);
ttick = timestamp;
}
/* report at erratic intervals */
tick-3100ms,
tick-3600ms
{
/* determine number of usecs since last report */
this->us_since_last = (timestamp - treport) / 1000;
treport = timestamp;
printf("%8d usecs since the last report\n", this->us_since_last);
/* normalize the total number of nsecs by the number of usecs */
normalize(@, this->us_since_last);
/* report aggregation (do not worry about formatting) */
printa(@);
/* clear the aggregation before resuming */
clear(@);
}
tick-12sec
{
exit(0);
}
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