Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a CanoScan lide 25 scanner . How can i measure the time to scan a document (trying different dpi) . Any command line tools ? Either Windows or Linux ...

share|improve this question
up vote 1 down vote accepted

On Linux systems, use the time command to run a command and output some basic system time stats after the command finishes. You'll need a commandline to initiate the scan.

user@host:$ time some-command arg1 arg2 arg3
<some-command output>

real    0m1.140s
user    0m0.015s
sys     0m0.016s
  • real is the elapsed real ("wall") time the process takes to run, start-to-finish;
  • user is the time the process used directly in user-mode (ie, not counting time the CPU spent servicing other processes);
  • sys is the time the process used directly in kernel-mode (again, not counting time the CPU spent on other processes).

time can summarize lots of other system-resource usage on processes; see man time on your system for details and options.

This also works in the Cygwin unix environment for Windows if you can locate a commandline tool for grabbing a scan.

share|improve this answer

How can i measure the time to scan a document

This sure works for your scans, whether in Windows or Linux:

alt text


If you want a software solution:

TimeLeft is a versatile desktop utility - it can be used as a countdown clock, reminder, clock, alarm clock, tray clock, stopwatch, timer, sticker, auction watch, work days/hours countdown clock and time synchronization utility.

TimeLeft is freeware (Windows only).

... from the command line, you can use this:

STOPWATCH can be used to calculate the elapsed time, (in seconds), in a batch file. It does this by redirecting the current time out to a file when the "start" command is given, and then reading that time back in when a "stop" command is given. For example:

C:\>stopwatch start > timestamp.txt
... other batch commands here ...
C:\>stopwatch stop < timestamp.txt
10

Note that the output from the stop command can be piped or redirected to a program or file if required, and multiple "stop" commands can be executed to get intermediate timestamps. If you want to save the output of the "stopwatch stop" command to a variable, DOS/Windows doesn't make things easy for you. Here's an example that includes an ugly workaround to get the elapsed time into a variable called "elapsed_time":

@echo off
stopwatch start > timestamp.txt
... other batch commands here ...
stopwatch stop < timestamp.txt > elapsed.txt
for /F %%a in ('type elapsed.txt') do set /a elapsed_time=%%a
echo %elapsed_time%
share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .