backbencher/chunk-262144.log at master · megacoder/backbencher · GitHub

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# Let write role testing create the file
rm -f /usr/tdrs/data/archdev/tf135c/datafile
/usr/bin/time -p ./backbencher -n4096000000 -c 262144 /usr/tdrs/data/archdev/tf135c/datafile
   Role: Writing
 Method: read(2) / write(2)
    End: 1168620780.057710
  Start: 1168620772.864382
Seconds: 7.193328
  Bytes: 4096000000.000000
   Rate: 5.69417e+08
 BlkSiz: 262144
ls -lh /usr/tdrs/data/archdev/tf135c/datafile
-rw-r-----  1 tf135c blaster 3.9G Jan 12 08:53 /usr/tdrs/data/archdev/tf135c/datafile
rm -f /usr/tdrs/data/archdev/tf135c/datafile
/usr/bin/time -p ./backbencher -m -n4096000000 -c 262144 /usr/tdrs/data/archdev/tf135c/datafile
   Role: Writing
 Method: mmap(2) / munmap(2)
    End: 1168620793.647438
  Start: 1168620780.112783
Seconds: 13.534655
  Bytes: 4096000000.000000
   Rate: 3.02631e+08
 BlkSiz: 262144
ls -lh /usr/tdrs/data/archdev/tf135c/datafile
-rw-r-----  1 tf135c blaster 3.9G Jan 12 08:53 /usr/tdrs/data/archdev/tf135c/datafile
# Do read role testing using leftover data file
/usr/bin/time -p ./backbencher -r -n4096000000 -c 262144 /usr/tdrs/data/archdev/tf135c/datafile
   Role: Reading
 Method: read(2) / write(2)
    End: 1168620814.345673
  Start: 1168620804.889973
Seconds: 9.455700
  Bytes: 4096000000.000000
   Rate: 4.33178e+08
 BlkSiz: 262144
/usr/bin/time -p ./backbencher -rm -n4096000000 -c 262144 /usr/tdrs/data/archdev/tf135c/datafile
   Role: Reading
 Method: mmap(2) / munmap(2)
    End: 1168620829.194662
  Start: 1168620814.349232
Seconds: 14.845430
  Bytes: 4096000000.000000
   Rate: 2.7591e+08
 BlkSiz: 262144