backbencher/chunk-512.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 512 /usr/tdrs/data/archdev/tf135c/datafile
   Role: Writing
 Method: read(2) / write(2)
    End: 1168620417.626109
  Start: 1168620377.688603
Seconds: 39.937506
  Bytes: 4096000000.000000
   Rate: 1.0256e+08
 BlkSiz: 512
ls -lh /usr/tdrs/data/archdev/tf135c/datafile
-rw-r-----  1 tf135c blaster 3.9G Jan 12 08:46 /usr/tdrs/data/archdev/tf135c/datafile
rm -f /usr/tdrs/data/archdev/tf135c/datafile
/usr/bin/time -p ./backbencher -m -n4096000000 -c 512 /usr/tdrs/data/archdev/tf135c/datafile
   Role: Writing
 Method: mmap(2) / munmap(2)
    End: 1168620513.308854
  Start: 1168620417.661406
Seconds: 95.647448
  Bytes: 4096000000.000000
   Rate: 4.28239e+07
 BlkSiz: 512
ls -lh /usr/tdrs/data/archdev/tf135c/datafile
-rw-r-----  1 tf135c blaster 3.9G Jan 12 08:46 /usr/tdrs/data/archdev/tf135c/datafile
# Do read role testing using leftover data file
/usr/bin/time -p ./backbencher -r -n4096000000 -c 512 /usr/tdrs/data/archdev/tf135c/datafile
   Role: Reading
 Method: read(2) / write(2)
    End: 1168620542.079020
  Start: 1168620514.726989
Seconds: 27.352031
  Bytes: 4096000000.000000
   Rate: 1.49751e+08
 BlkSiz: 512
/usr/bin/time -p ./backbencher -rm -n4096000000 -c 512 /usr/tdrs/data/archdev/tf135c/datafile
   Role: Reading
 Method: mmap(2) / munmap(2)
    End: 1168620589.572270
  Start: 1168620542.082050
Seconds: 47.490220
  Bytes: 4096000000.000000
   Rate: 8.62493e+07
 BlkSiz: 512