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-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-/*
-
-Prof is a rudimentary real-time profiler.
-
-Given a command to run or the process id (pid) of a command already
-running, it samples the program's state at regular intervals and reports
-on its behavior.  With no options, it prints a histogram of the locations
-in the code that were sampled during execution.
-
-Since it is a real-time profiler, unlike a traditional profiler it samples
-the program's state even when it is not running, such as when it is
-asleep or waiting for I/O.  Each thread contributes equally to the
-statistics.
-
-
-Usage: prof -p pid [-t total_secs] [-d delta_msec] [6.out args ...]
-
-The output modes (default -h) are:
-
-	-P file.prof:
-		Write the profile information to file.prof, in the format used by pprof.
-		At the moment, this only works on Linux amd64 binaries and requires that the
-		binary be written using 6l -e to produce ELF debug info.
-		See http://code.google.com/p/google-perftools for details.
-	-h: histograms
-		How many times a sample occurred at each location.
-	-f: dynamic functions
-		At each sample period, print the name of the executing function.
-	-l: dynamic file and line numbers
-		At each sample period, print the file and line number of the executing instruction.
-	-r: dynamic registers
-		At each sample period, print the register contents.
-	-s: dynamic function stack traces
-		At each sample period, print the symbolic stack trace.
-
-Flag -t sets the maximum real time to sample, in seconds, and -d
-sets the sampling interval in milliseconds.  The default is to sample
-every 100ms until the program completes.
-
-For reasons of disambiguation it is installed as 6prof although it also serves
-as an 8prof and a 5prof.
-
-*/
-package documentation