gfperf-parallel-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
] [-n, --name group name
] [-w, --wait start time
]
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.
This command is expected to be called by gfperf.rb in parallel.
-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 read test file. The default is 4K. (1K=2^10)
-r, --random
random
Only 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 name
Specify gfsd name on which test file is created. If this option is omitted, gfmd determines automatically.
-k, --timeout
timeout seconds
Maximum read time in seconds. This comannd measures how much data to be read in this seconds.
-n, --name
group name
Group name in parallel execution.
-w, --wait
start time
Start time specified by gfperf.rb. This command waits until start time. Start time is written in UTC (YYYY-MM-DDThh:mm:ssZ) and must be in 10 seconds from current time.