ceph/src/erasure-code/jerasure/gf-complete/tools/time_tool.sh

   1 # time_tool.sh - Shell script to test various timings.
   2 # This is a rough tester -- its job is to work quickly rather than precisely.
   3 # (Jim Plank)
   4
   5 #!/bin/sh
   6
   7 if [ $# -lt 3 ]; then
   8   echo 'usage sh time_tool.sh M|D|R|B w method' >&2
   9   exit 1
  10 fi
  11
  12 op=$1
  13 w=$2
  14
  15 shift ; shift
  16
  17 method="$*"
  18
  19 if [ $op != M -a $op != D -a $op != R -a $op != B ]; then
  20   echo 'usage sh time_tool.sh M|D|R|B w method' >&2
  21   echo 'You have to specify a test: ' >&2
  22   echo '  M=Multiplication' >&2
  23   echo '  D=Division' >&2
  24   echo '  R=Regions' >&2
  25   echo '  B=Best-Region' >&2
  26   exit 1
  27 fi
  28
  29 # First, use a 16K buffer to test the performance of single multiplies.
  30
  31 fac=`echo $w | awk '{ n = $1; while (n != 0 && n%2==0) n /= 2; print n }'`
  32 if [ $fac -eq 0 ]; then
  33   echo 'usage sh time_tool.sh M|D|R|B w method' >&2
  34   echo 'Bad w' >&2
  35   exit 1
  36 fi
  37
  38 bsize=16384
  39 bsize=`echo $bsize $fac | awk '{ print $1 * $2 }'`
  40
  41 if [ `./gf_time $w M -1 $bsize 1 $method 2>&1 | wc | awk '{ print $1 }'` -gt 2 ]; then
  42   echo 'usage sh time_tool.sh w method' >&2
  43   echo "Bad method"
  44   exit 1
  45 fi
  46
  47 if [ $op = M -o $op = D ]; then
  48   iter=1
  49   c1=`./gf_time $w $op -1 $bsize $iter $method`
  50   t=`echo $c1 | awk '{ printf "%d\n", $4*100 }'`
  51   s=`echo $c1 | awk '{ print $8 }'`
  52   bs=$s
  53
  54   while [ $t -lt 1 ]; do
  55     bs=$s
  56     iter=`echo $iter | awk '{ print $1*2 }'`
  57     c1=`./gf_time $w $op -1 $bsize $iter $method`
  58     t=`echo $c1 | awk '{ printf "%d\n", $4*100 }'`
  59     s=`echo $c1 | awk '{ print $8 }'`
  60   done
  61
  62   echo $op $bs | awk '{ printf "%s speed (MB/s): %8.2lf   W-Method: ", $1, $2 }'
  63   echo $w $method
  64   exit 0
  65 fi
  66
  67 bsize=16384
  68 bsize=`echo $bsize $fac | awk '{ print $1 * $2 }'`
  69
  70 best=0
  71 while [ $bsize -le 4194304 ]; do
  72   iter=1
  73   c1=`./gf_time $w G -1 $bsize $iter $method`
  74   t=`echo $c1 | awk '{ printf "%d\n", $6*500 }'`
  75   s=`echo $c1 | awk '{ print $10 }'`
  76   bs=$s
  77
  78   while [ $t -lt 1 ]; do
  79     bs=$s
  80     iter=`echo $iter | awk '{ print $1*2 }'`
  81     c1=`./gf_time $w G -1 $bsize $iter $method`
  82     t=`echo $c1 | awk '{ printf "%d\n", $6*500 }'`
  83     s=`echo $c1 | awk '{ print $10 }'`
  84   done
  85   if [ $bsize -lt 1048576 ]; then
  86     str=`echo $bsize | awk '{ printf "%3dK\n", $1/1024 }'`
  87   else
  88     str=`echo $bsize | awk '{ printf "%3dM\n", $1/1024/1024 }'`
  89   fi
  90   if [ $op = R ]; then
  91     echo $str $bs | awk '{ printf "Region Buffer-Size: %4s (MB/s): %8.2lf   W-Method: ", $1, $2 }'
  92     echo $w $method
  93   fi
  94   best=`echo $best $bs | awk '{ print ($1 > $2) ? $1 : $2 }'`
  95   bsize=`echo $bsize | awk '{ print $1 * 2 }'`
  96 done
  97 echo $best | awk '{ printf "Region Best (MB/s): %8.2lf   W-Method: ", $1 }'
  98 echo $w $method