1 files changed, 98 insertions, 0 deletions
diff --git a/src/erasure-code/jerasure/gf-complete/tools/time_tool.sh b/src/erasure-code/jerasure/gf-complete/tools/time_tool.sh
new file mode 100644
index 000000000..7b165e178
--- /dev/null
+++ b/src/erasure-code/jerasure/gf-complete/tools/time_tool.sh
@@ -0,0 +1,98 @@
+# time_tool.sh - Shell script to test various timings.  
+# This is a rough tester -- its job is to work quickly rather than precisely.
+# (Jim Plank)
+
+#!/bin/sh
+
+if [ $# -lt 3 ]; then
+  echo 'usage sh time_tool.sh M|D|R|B w method' >&2
+  exit 1
+fi
+
+op=$1
+w=$2
+
+shift ; shift
+
+method="$*"
+
+if [ $op != M -a $op != D -a $op != R -a $op != B ]; then
+  echo 'usage sh time_tool.sh M|D|R|B w method' >&2
+  echo 'You have to specify a test: ' >&2 
+  echo '  M=Multiplication' >&2 
+  echo '  D=Division' >&2 
+  echo '  R=Regions' >&2 
+  echo '  B=Best-Region' >&2 
+  exit 1
+fi
+
+# First, use a 16K buffer to test the performance of single multiplies.
+
+fac=`echo $w | awk '{ n = $1; while (n != 0 && n%2==0) n /= 2; print n }'`
+if [ $fac -eq 0 ]; then
+  echo 'usage sh time_tool.sh M|D|R|B w method' >&2
+  echo 'Bad w' >&2
+  exit 1
+fi
+
+bsize=16384
+bsize=`echo $bsize $fac | awk '{ print $1 * $2 }'`
+
+if [ `./gf_time $w M -1 $bsize 1 $method 2>&1 | wc | awk '{ print $1 }'` -gt 2 ]; then
+  echo 'usage sh time_tool.sh w method' >&2
+  echo "Bad method"
+  exit 1
+fi
+
+if [ $op = M -o $op = D ]; then
+  iter=1
+  c1=`./gf_time $w $op -1 $bsize $iter $method`
+  t=`echo $c1 | awk '{ printf "%d\n", $4*100 }'`
+  s=`echo $c1 | awk '{ print $8 }'`
+  bs=$s
+  
+  while [ $t -lt 1 ]; do
+    bs=$s
+    iter=`echo $iter | awk '{ print $1*2 }'`
+    c1=`./gf_time $w $op -1 $bsize $iter $method`
+    t=`echo $c1 | awk '{ printf "%d\n", $4*100 }'`
+    s=`echo $c1 | awk '{ print $8 }'`
+  done
+  
+  echo $op $bs | awk '{ printf "%s speed (MB/s): %8.2lf   W-Method: ", $1, $2 }'
+  echo $w $method 
+  exit 0
+fi
+  
+bsize=16384
+bsize=`echo $bsize $fac | awk '{ print $1 * $2 }'`
+
+best=0
+while [ $bsize -le 4194304 ]; do
+  iter=1
+  c1=`./gf_time $w G -1 $bsize $iter $method`
+  t=`echo $c1 | awk '{ printf "%d\n", $6*500 }'`
+  s=`echo $c1 | awk '{ print $10 }'`
+  bs=$s
+
+  while [ $t -lt 1 ]; do
+    bs=$s
+    iter=`echo $iter | awk '{ print $1*2 }'`
+    c1=`./gf_time $w G -1 $bsize $iter $method`
+    t=`echo $c1 | awk '{ printf "%d\n", $6*500 }'`
+    s=`echo $c1 | awk '{ print $10 }'`
+  done
+  if [ $bsize -lt 1048576 ]; then
+    str=`echo $bsize | awk '{ printf "%3dK\n", $1/1024 }'`
+  else 
+    str=`echo $bsize | awk '{ printf "%3dM\n", $1/1024/1024 }'`
+  fi
+  if [ $op = R ]; then
+    echo $str $bs | awk '{ printf "Region Buffer-Size: %4s (MB/s): %8.2lf   W-Method: ", $1, $2 }'
+    echo $w $method 
+  fi
+  best=`echo $best $bs | awk '{ print ($1 > $2) ? $1 : $2 }'`
+  bsize=`echo $bsize | awk '{ print $1 * 2 }'`
+done
+echo $best | awk '{ printf "Region Best (MB/s): %8.2lf   W-Method: ", $1 }'
+echo $w $method