/*
* hotspot.d - plot disk event by location, look for hotspots.
* Written in DTrace (Solaris 10 3/05).
*
* This simple DTrace script determines if disk activity is occuring in
* the one place - a "hotspot". This helps us understand the system's usage
* of a disk, it does not imply that the existance or not of a hotspot is
* good or bad (often may be good, less seeking).
*
* $Id: hotspot.d 3 2007-08-01 10:50:08Z brendan $
*
* USAGE: hotspot.d # hit Ctrl-C to end
*
* FIELDS:
* Disk disk instance name
* Major driver major number
* Minor driver minor number
* value location, by megabyte
* count number of I/O operations
*
* COPYRIGHT: Copyright (c) 2005, 2006 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.
*
* See the License for the specific language governing permissions
* and limitations under the License.
*
* CDDL HEADER END
*
* 07-May-2005 Brendan Gregg Created this.
* 20-Apr-2006 " " Last update.
*/
/*
* Print header
*/
{
printf("Tracing... Hit Ctrl-C to end.\n");
}
/*
* Process disk event
*/
{
}
/*
* Print final report
*/
{
}