How to get "requests per second" for Apache in Linux?

Question

In Windows for ASP, you can get it perfmon, but...

How to get "requests per second" for Apache in Linux?

Answer 1

Here is a short bash script I made up to sample the request rate (based on dicroce's suggestion of using wc -l on the log file).

#!/bin/sh  ############################################################################## # This script will monitor the number of lines in a log file to determine the # number of requests per second. # # Example usage: # reqs-per-sec -f 15 -i /var/www/http/access.log # # Author: Adam Franco # Date: 2009-12-11 # License: http://www.gnu.org/copyleft/gpl.html GNU General Public License (GPL) ##############################################################################  usage="Usage: `basename $0` -f <frequency in seconds, min 1, default 60> -l <log file>"  # Set up options while getopts ":l:f:" options; do  case $options in  l ) logFile=$OPTARG;;  f ) frequency=$OPTARG;;  \? ) echo -e $usage   exit 1;;  * ) echo -e $usage   exit 1;;   esac done  # Test for logFile if [  ! -n "$logFile" ] then  echo -e $usage  exit 1 fi  # Test for frequency if [  ! -n "$frequency" ] then  frequency=60 fi  # Test that frequency is an integer if [  $frequency -eq $frequency 2> /dev/null ] then  : else  echo -e $usage  exit 3 fi  # Test that frequency is an integer if [  $frequency -lt 1 ] then  echo -e $usage  exit 3 fi  if [ ! -e "$logFile" ] then  echo "$logFile does not exist."  echo   echo -e $usage  exit 2 fi  lastCount=`wc -l $logFile | sed 's/\([0-9]*\).*/\1/'` while true do  newCount=`wc -l $logFile | sed 's/\([0-9]*\).*/\1/'`  diff=$(( newCount - lastCount ))  rate=$(echo "$diff / $frequency" |bc -l)  echo $rate  lastCount=$newCount  sleep $frequency done