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LEARN ABOUT OSX

weblatency.d

weblatency.d(1m)						   USER COMMANDS						  weblatency.d(1m)

NAME

       weblatency.d - website latency statistics. Uses DTrace.

SYNOPSIS

       weblatency.d

DESCRIPTION

       This prints statistics for hostnames that browers have set GET requests for, in particular latency by hostname.

       The  latency  measured  is  from  the  browser sending the GET request to when the browser begins to recieve the response. It is an overall
       response time for the client, and encompasses connection speed delays, DNS lookups, proxy delays, and web server response time.

       This is written as an experimental tool, and may not work at all with your browser.

       Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES

       Print report after Ctrl-C is hit,
	      # weblatency.d

FIELDS

       HOST   hostname from URL

       NUM    number of GETs

       AVGTIME(ms)
	      Average time for response, ms

       MAXTIME(ms)
	      Maximum time for response, ms

NOTES

       See the source code for the "BROWSER" variable, which sets the browser to trace (currently set to "mozilla-bin").

IDEA

       Bryan Cantrill (who wrote an elegant version for Sol 10 update 1)

DOCUMENTATION

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       weblatency.d will sample until Ctrl-C is hit.

AUTHOR

       Brendan Gregg [Sydney, Australia]

SEE ALSO

       dtrace(1M)

version 0.60							   Nov 30, 2005 						  weblatency.d(1m)