[Patch 1/10]Patch to integrate kernbench to LTP to test sched_mc=2
To verify CPU consolidation when sched_mc=2 we need kernbench. Hence 
integrating it
in LTP.

Signed-off-by: poornima nayak <[email protected]>

diff -uprN ltp_orig/utils/benchmark/kernbench-0.42/COPYING 
ltp_patched/utils/benchmark/kernbench-0.42/COPYING
--- ltp_orig/utils/benchmark/kernbench-0.42/COPYING     1970-01-01 
05:30:00.000000000 +0530
+++ ltp_patched/utils/benchmark/kernbench-0.42/COPYING  2009-06-30 
15:05:39.000000000 +0530
@@ -0,0 +1,340 @@
+                   GNU GENERAL PUBLIC LICENSE
+                      Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
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diff -uprN ltp_orig/utils/benchmark/kernbench-0.42/kernbench 
ltp_patched/utils/benchmark/kernbench-0.42/kernbench
--- ltp_orig/utils/benchmark/kernbench-0.42/kernbench   1970-01-01 
05:30:00.000000000 +0530
+++ ltp_patched/utils/benchmark/kernbench-0.42/kernbench        2009-06-30 
15:05:39.000000000 +0530
@@ -0,0 +1,233 @@
+#!/bin/sh
+# kernbench by Con Kolivas <[email protected]>
+# based on a benchmark by Martin J. Bligh
+trap 'echo "ABORTING";exit' 1 2 15
+
+VERSION=0.42
+
+num_runs=5
+single_runs=0
+half_runs=1
+opti_runs=1
+max_runs=1
+fast_run=0
+
+while getopts vsHOMn:o:hf i
+do
+       case $i in
+                h)     echo "kernbench v$VERSION by Con Kolivas 
<[email protected]>"
+                               echo "Usage:"
+                               echo "kernbench [-n runs] [-o jobs] [-s] [-H] 
[-O] [-M] [-h] [-v]"
+                               echo "n : number of times to perform benchmark 
(default 5)"
+                               echo "o : number of jobs for optimal run 
(default 4 * cpu)"
+                               echo "s : perform single threaded runs (default 
don't)"
+                               echo "H : don't perform half load runs (default 
do)"
+                               echo "O : don't perform optimal load runs 
(default do)"
+                               echo "M : don't perform maximal load runs 
(default do)"
+                               echo "f : fast run"
+                               echo "h : print this help"
+                               echo "v : print version number"
+                               exit ;;
+                v) echo "kernbench Version $VERSION by Con Kolivas 
<[email protected]>" ; exit ;;
+                n) nruns=$OPTARG ;;
+                o) optijobs=$OPTARG ;;
+                s) single_runs=1 ;;
+                H) half_runs=0 ;;
+                O) opti_runs=0 ;;
+                M) max_runs=0 ;;
+                f) fast_run=1 ;;
+       esac
+done
+
+if [[ ! -f include/linux/kernel.h ]] ; then
+       echo "No kernel source found; exiting"
+       exit 
+fi
+
+for i in time awk yes date
+do
+       iname=`which $i`
+       if [[ ! -a $iname ]] ; then
+               echo "$i not found in path, please install it; exiting"
+               exit
+       fi
+done
+
+time=`which time`
+
+if [[ $nruns -gt 0 ]] ; then
+       num_runs=$nruns
+elif [[ $fast_run -eq 1 ]]; then
+       echo "Dropping to 3 runs for fast run"
+       num_runs=3
+fi
+
+if (($num_runs < 1)) ; then
+       echo "Nothing to do; exiting"
+       exit
+fi
+
+if (($num_runs > 10)) ; then
+       echo "Are you crazy? trimming number of runs to 10"
+       num_runs=10
+fi
+
+if [[ ! -d /proc ]] ; then
+       echo "Can't find proc filesystem; exiting"
+       exit
+fi
+
+mem=`awk '/MemTotal/ {print $2}' /proc/meminfo`
+if [[ $mem -lt 4000000 && $max_runs -gt 0 ]] ; then
+       echo Less than 4Gb ram detected!
+       echo Maximal loads will not measure cpu throughput and may cause a 
swapstorm!
+       echo If you did not plan this, -M flag is recommended to bypass maximal 
load.
+fi
+
+(( single_runs *= $num_runs ))
+(( half_runs *= $num_runs ))
+(( opti_runs *= $num_runs ))
+(( max_runs *= $num_runs ))
+
+cpus=`grep -c ^processor /proc/cpuinfo`
+echo $cpus cpus found
+echo Cleaning source tree...
+make clean > /dev/null 2>&1
+
+if [[ $fast_run -eq 0 ]] ; then
+       echo Caching kernel source in ram...
+       for i in `find -type f`
+       do
+               cat $i > /dev/null
+       done
+fi
+
+if [[ ! -f .config ]] ; then
+       echo No old config found, using defconfig
+       echo Making mrproper
+       make mrproper > /dev/null 2>&1
+       echo Making defconfig...
+       make defconfig > /dev/null 2>&1
+else
+       echo Making oldconfig...
+       yes "" | make oldconfig > /dev/null 2>&1
+fi
+
+halfjobs=$(( $cpus / 2 ))
+optijobs=${optijobs:=$(( $cpus * 4 ))}
+
+if [[ $halfjobs -lt 2 ]] ; then
+       echo "Half load is no greater than single; disabling"
+       half_runs=0
+elif [[ $halfjobs -eq 2 ]] ; then
+       echo "Half load is 2 jobs, changing to 3 as a kernel compile won't 
guarantee 2 jobs"
+       halfjobs=3
+fi
+
+echo Kernel `uname -r`
+echo Performing $num_runs runs of
+if [[ $single_runs -gt 0 ]] ; then
+       echo make
+fi
+if [[ $half_runs -gt 0 ]] ; then
+       echo make -j $halfjobs
+fi
+if [[ $opti_runs -gt 0 ]] ; then
+       echo make -j $optijobs
+fi
+if [[ $max_runs -gt 0 ]] ; then
+       echo make -j
+fi
+echo
+
+echo All data logged to kernbench.log
+
+if [[ $fast_run -eq 0 ]] ; then
+       echo Warmup run...
+       make -j $optijobs > /dev/null 2>&1
+fi
+
+date >> kernbench.log
+uname -r >> kernbench.log
+
+add_data_point()
+{
+    echo $@ | awk '{printf "%.6f %.6f %d", $1 + $2, $1 * $1 + $3, $4 + 1}'
+}
+
+show_statistics()
+{
+    case $3 in
+       0)
+           echo "No data"
+           ;;
+       1)
+           echo $1
+           ;;
+       *)
+           avg=`echo $1 $3 | awk '{print $1 / $2}'`
+           var=`echo $1 $2 $3 | awk '{print ($2 - ($1 * $1) / $3) / ($3 - 1)}'`
+           sdev=`echo $var | awk '{print $1^0.5}'`
+           echo "$avg ($sdev)"
+           ;;
+    esac
+}
+
+do_log()
+{
+       echo "Average $runname Run (std deviation):" > templog
+       echo Elapsed Time  `show_statistics $temp_elapsed` >> templog
+       echo User Time  `show_statistics $temp_user` >> templog
+       echo System Time  `show_statistics $temp_sys` >> templog
+       echo Percent CPU  `show_statistics $temp_percent` >> templog
+       echo Context Switches  `show_statistics $temp_ctx` >> templog
+       echo Sleeps  `show_statistics $temp_sleeps` >> templog
+       echo >> templog
+       cat templog
+       cat templog >> kernbench.log
+}
+
+do_runs()
+{
+       temp_elapsed="a"
+       for (( i=1 ; i <= temp_runs ; i++ ))
+       do
+               echo $runname run number $i...
+               make clean > /dev/null 2>&1
+               sync
+               if [[ $fast_run -eq 0 ]] ; then
+                       sleep 5
+               fi
+               $time -f "%e %U %S %P %c %w" -o timelog make -j $tempjobs > 
/dev/null 2>&1
+               read elapsed_time user_time sys_time percent ctx sleeps <timelog
+               temp_elapsed=`add_data_point $elapsed_time $temp_elapsed`
+               temp_user=`add_data_point $user_time $temp_user`
+               temp_sys=`add_data_point $sys_time $temp_sys`
+               temp_percent=`add_data_point $percent $temp_percent`
+               temp_ctx=`add_data_point $ctx $temp_ctx`
+               temp_sleeps=`add_data_point $sleeps $temp_sleeps`
+       done
+       if [[ $temp_runs -ne 0 ]] ; then
+               do_log
+       fi
+}
+
+temp_runs=$single_runs
+tempjobs=1
+runname="Single threaded"
+do_runs
+
+temp_runs=$half_runs
+tempjobs=$halfjobs
+runname="Half load -j $halfjobs"
+do_runs
+
+temp_runs=$opti_runs
+tempjobs=$optijobs
+runname="Optimal load -j $optijobs"
+do_runs
+
+temp_runs=$max_runs
+tempjobs=""
+runname="Maximal load -j"
+do_runs
diff -uprN ltp_orig/utils/benchmark/kernbench-0.42/Makefile 
ltp_patched/utils/benchmark/kernbench-0.42/Makefile
--- ltp_orig/utils/benchmark/kernbench-0.42/Makefile    1970-01-01 
05:30:00.000000000 +0530
+++ ltp_patched/utils/benchmark/kernbench-0.42/Makefile 2009-06-30 
15:05:39.000000000 +0530
@@ -0,0 +1,8 @@
+all: 
+
+install: 
+       chmod ugo+x kernbench
+
+configure:
+       
+clean:
diff -uprN ltp_orig/utils/benchmark/kernbench-0.42/README 
ltp_patched/utils/benchmark/kernbench-0.42/README
--- ltp_orig/utils/benchmark/kernbench-0.42/README      1970-01-01 
05:30:00.000000000 +0530
+++ ltp_patched/utils/benchmark/kernbench-0.42/README   2009-06-30 
15:05:39.000000000 +0530
@@ -0,0 +1,81 @@
+Kernbench v0.42
+
+
+What is this?
+
+This is a cpu throughput benchmark originally devised and used by Martin J.
+Bligh. It is designed to compare kernels on the same machine, or to compare
+hardware. To compare hardware you need to be running the same architecture
+machines (eg i386), the same userspace binaries and run kernbench on the same
+kernel source tree.
+
+It runs a kernel at various numbers of concurrent jobs: 1/2 number of cpus, 
+optimal (default is 4xnumber of cpus) and maximal job count. Optionally it can
+also run single threaded. It then prints out a number of useful statistics
+for the average of each group of runs and logs them to kernbench.log
+
+You need more than 2Gb of ram for this to be a true throughput benchmark or
+else you will get swapstorms.
+
+Ideally it should be run in single user mode on a non-journalled filesystem.
+To compare results it should always be run in the same kernel tree.
+
+
+How do I use it?
+
+You need a kernel tree (any 2.6 will do) and the applications 'time', 'awk',
+'date' and 'yes' installed. 'time' is different to the builtin time used by
+BASH and has more information desired for this benchmark.
+ 
+Simply cd into the kernel tree directory and type
+
+/path/to/kernbench
+
+
+Options
+
+kernbench [-n runs] [-o jobs] [-s] [-H] [-O] [-M] [-h] [-v]
+n : number of times to perform benchmark (default 5)
+o : number of jobs for optimal run (default 4 * cpu)
+s : perform single threaded runs (default don't)
+H : don't perform half load runs (default do)
+O : don't perform optimal load runs (default do)
+M : don't perform maximal load runs (default do)
+f : fast run
+h : print this help
+v : print version number
+
+
+Changelog:
+v0.42 Fixed incorrect counting of cpus (thanks Flynn Marquardt)
+       Changed -j to at least 4GB ram.
+
+v0.41 Fixed make oldconfig
+
+v0.40 Made all runs use the oldconfig if it exists. Changed to only do one
+       warmup run before all the benchmarks. Added logging to kernbench.log
+       Cleaned up the code substantially to reuse code where possible.
+       Added standard deviation statistics courtesy of Peter Williams
+
+v0.30 Added fast run option which bypasses caching, warmup and tree 
+       preparation and drops number of runs to 3. Modified half loads to 
+       detect -j2 and change to -j3. Added syncs. Improved warnings and 
+       messages. 
+
+v0.20 Change to average of runs, add options to choose which runs to perform
+       remove single threaded run from defaults, do warmup run, lots more
+       sanity checks, drop meaningless runs, add a few warnings, remove fudge
+       factor from no. of jobs.
+
+v0.11 First public release
+
+
+Thanks: M. Bligh for ideas. Others for help with magic incantations to get
+       BASH to work.
+
+
+Con Kolivas <[email protected]>
+Mon Jun 18 18:59:24 2007
+
+License:
+GPL of course. Read COPYING included in this tarball.

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