02-12-2015
You should ignore the time it takes the first time, because that is used to read pieces of program and data into memory, which varies a lot, in addition to the time it takes to run the program. The second time, it is already in memory, so the time is largely the time to run the program. That's why it is a lot faster and also more consistent, which makes it a more reliable way to do comparisons relative to other solutions..
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Hi all,
Suppose I have a file with the contents below, and I only want to print words %S_ then | sort -u.
------------------------------
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Hi everyone
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Hi,
I require to replace 2 items:
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Hi,
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LEARN ABOUT DEBIAN
avr-run
run(1) GNU Tools run(1)
NAME
run--Simulator front-end
SYNOPSIS
run [-v] [-p freq] [-m memory] [--sysroot filepath] program
DESCRIPTION
Use `run program' to execute a binary by interpreting machine instructions on your host computer.
run is the same emulator used by GDB's `target sim' command. You can run it directly by executing run if you just want to see your program
execute, and do not need any debugger functionality. You can also use run to generate profiling information for analysis with gprof.
OPTIONS
-v Verbose output. Display the name of the program to run before execution; after execution, display the number of instructions exe-
cuted, the number of machine cycles emulated, the number of pipeline stalls, the real time taken, the emulated execution time taken,
and a summary of how much profiling information was generated.
-p freq
Generate profile information (for use with gprof). freq is the profiling frequency. Write the profiling information to a file
called gmon.out.
-m memory
Set the memory size for the emulated machine to two to the power memory. The default value is 19, emulating a board with 524288
bytes of memory.
--sysroot filepath
Prepend filepath to all simulator system calls that pass absolute file paths. Change working directory to filepath at program
start. Not all simulators support this option; those that don't, will ignore it.
SEE ALSO
`gprof' entry in info; `gdb' entry in info; Using GDB: A Guide to the GNU Source-Level Debugger, Richard M. Stallman and Roland H. Pesch.
COPYING
Copyright (c) 1993, 2000, 2012 Free Software Foundation, Inc.
This document is distributed under the terms of the GNU Free Documentation License, version 1.1. That license is described in the sources
for this manual page, but it is not displayed here in order to make this manual more consise. Copies of this license can also be obtained
from: http://www.gnu.org/copyleft/.
GNU Tools 13oct1993 run(1)