Prev: (Partially SOLVED) Re: Wireless still not working
Next: How to reduce a debian system to a base system
From: Ron Johnson on 29 Mar 2010 20:20
On 2010-03-29 16:35, Mike McClain wrote:
[snip]
>
> Thanks a lot. Though my error was pointed out as a typo and corrected
> a while back your solution using " date '+%s' " is much more elegant
> than what I had done.

If you want more (possibly too much) precision:
$ date +'%s.%N'

--
"History does not long entrust the care of freedom to the weak
or the timid." Dwight Eisenhower


--
To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
Archive: http://lists.debian.org/4BB14146.1060807(a)cox.net
From: Karl Vogel on 29 Mar 2010 21:30
Here's something I modified as part of a benchmark script called "fdtree".

--
Karl Vogel I don't speak for the USAF or my company
Dijkstra probably hates me. --Linus Torvalds, in kernel/sched.c

#!/bin/bash
# How to use xdate/xtime/persec:
#
# START=$(date "+%s")
# count=10
# xdate
# tin=$(xtime)
#
# # do something time-consuming $count times...
# tout=$(xtime)
# set $(persec $tin $tout $count); ttot=$1; results=$2
# xdate
# echo "TIME IN, OUT, TOTAL = "$tin, $tout, $ttot
# echo -e "\tWork per second = " $results

PATH=/usr/local/bin:/bin:/usr/bin
export PATH

function xdate
# Display the date in this form: Thu, 10 Sep 2009 21:22:06.494
{
set $(date "+%a, %d %b %Y %T %N")
ms=$(echo $6 | cut -c1-3)
echo "$1 $2 $3 $4 $5.$ms"
}

function xtime
# Display elapsed runtime to the millisecond.
{
set $(date "+%s %N")
sec=$(($1 - $START))
ms=$(echo $2 | cut -c1-3)
echo "$sec.$ms"
}

function persec
# args: start-second, finish-second, count-things
# returns elapsed time and things that happened per second
# to the millisecond.
{
start=$1
finish=$2
count=$3

if test "$finish" = "$start"; then
echo "0 0"
else
echo $(echo "scale=3; $finish-$start;
$count/($finish-$start)" | bc)
fi
}

function dbg
# debugging prints
{
test $DEBUG -gt 0 && echo -e "$@"
}

tmp=/tmp/t1$$
tmp2=/tmp/t2$$

xdate
START=$(date "+%s")
tin=$(xtime)
echo

for k in 1 2 3 4 5 6 7 8 9 10
do
# Read a short amount of random data.
dd if=/dev/random of=$tmp2 bs=1k count=1 2> /dev/null

# Duplicate it a bunch of times.
cat $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 > $tmp
cat $tmp $tmp $tmp $tmp $tmp $tmp $tmp $tmp > $tmp2
cat $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 > $tmp
cat $tmp $tmp $tmp $tmp $tmp $tmp $tmp $tmp > $tmp2
cat $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 $tmp2 > $tmp
rm $tmp2

# Generate a hash.
md5sum $tmp
ls -l $tmp
rm $tmp
done

echo
count=10
tout=$(xtime)
set $(persec $tin $tout $count); ttot=$1; results=$2
xdate

echo "TIME IN, OUT, TOTAL = "$tin, $tout, $ttot
echo -e "\tWork per second = " $results
exit 0


--
To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org
Archive: http://lists.debian.org/20100330012125.34BEBB7DB(a)bsd118.wpafb.af.mil
First  |  Prev  | 
Pages: 1 2 3
Prev: (Partially SOLVED) Re: Wireless still not working
Next: How to reduce a debian system to a base system