gfperf-read [-t, --testdir test directory] [-m, --gfarm2fs gfarm2fs mount point] [-l, --filesize file size] [-b, --bufsize buffer size] [-r, --random random ] [-g, --gfsd gfsd name] [-k, --timeout timeout seconds]
This command mesures file read performance of specified size of file in test directory.
The test file is automatically created and not removed to be reused again.
-t, --testdir test directory
Test file is created in test directory.
Specify only gfarm url (that begins with gfarm:///) .
The default is gfarm:///tmp .
-m, --gfarm2fs gfarm2fs mount pointSpecify gfarm2fs mount point.
-l, --filesize file sizeFile size to be created. The default is 1M. (1G=2^20)
-b, --bufsize buffer sizeBuffer size to read test file. The default is 4K. (1K=2^10)
-r, --random randomOnly if this option is specified, Reads test file randomly. Option parameter is free. If this option is omitted, this command reads test file sequentially.
-g, --gfsd gfsd nameSpecify gfsd name on which test file is created. If this option is omitted, gfmd determines automatically.
-k, --timeout timeout secondsMaximum read time in seconds. This comannd measures how much data to be read in this seconds.