gfperf-write
[-t, --testdir test directory
] [-m, --gfarm2fs gfarm2fs mount point
] [-l, --filesize file size
] [-b, --bufsize buffer size
] [-r, --random random
] [-g, --gfsd gfsd name
] [-o, --overwrite overwrite flag
] [-k, --timeout timeout seconds
]
This command mesures file write performance of specified size of file in test directory
.
The test file is automatically created and removed.
If overwrite flag is on, test file is 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 point
Specify gfarm2fs mount point.
-l, --filesize
file size
File size to be created. The default is 1M. (1G=2^20)
-b, --bufsize
buffer size
Buffer size to write test file. The default is 4K. (1K=2^10)
-r, --random
random
Only if this option is specified, Writes test file randomly. Option parameter is free. If this option is omitted, this command writes test file sequentially.
-g, --gfsd
gfsd name
Specify gfsd name on which test file is created. If this option is omitted, gfmd determines automatically.
-o, --overwrite
overwrite flag
Only if this option is specified, Overwrite test file. Option parameter is free. If this option is omitted, this command appends test data on 1 byte file.
-k, --timeout
timeout seconds
Maximum write time in seconds. This comannd measures how much data to be written in this seconds.