#!/usr/bin/perl
my $debug="0";
my @measurements=(1,5,10,50,100,500,1000);
#my @measurements=(50);
my $disk="sdc";
############################################
foreach my $measurement ( @measurements )
{
  print "###############\n";
  print "$measurement\n";
  print "###############\n";
  ############################################
  if ($debug == "0"){
    our %command=(
       'Stats_io'      => qq{iostat  -x $disk -d "tps,r/s,w/s,svctm,Blk_read/s,Blk_wrtn/s,Blk_read,Blk_wrtn,kB_read/s,kB_wrtn/s,kB_read,kB_wrtn" |grep $disk},
       'Stats_vmstats' => q{vmstat |awk '{ print $9, $10 }' },
       'Read_Test'     => qq{dd if=/dev/${disk}3 of=/dev/null bs=512 count=$measurement |grep -v records}  ,
       'Write_Test'    => qq{dd if=/dev/zero of=/dev/${disk}3 bs=512k count=$measurement |grep -v records}
    );
  };
  ############################################
  if ($debug == "1"){  
    for my $key (keys %command )
    {
      print("COMMAND:\t$command{$key}\n");
    }
  }
  ############################################
  print "   ---READ------\n";
  open( READ,    "$command{Read_Test} |grep -v records |") || die "cant run $command{Read_Test}:\t$?\n"; 
  while( <READ> ) { 
     if ( /copied/ ){
       print("\t$_\n");
     }
  }
  #close(READ)||die; 
  ############################################
  print "   ---WRIGHT----\n";
  open( WRIGHT, "$command{Write_Test} |") || die "cant run $command{Write_Test}:\t$?\n"; 
  while( <WRIGHT> ){ 
     if ( /copied/ ){
       print("\t$_\n");
     }
  }
  #close(WRIGHT)||die; 
  ############################################
}