The HOME GPFS storage performance data collected at LBL/NERSC with the IOZone tool. Filesystem description http://www.nersc.gov/users/storage-and-file-systems/file-systems/
Collected - 2018-2-16
gpfs
2G
LBNL
Liu, Zhengchun
IOZone
text/plain
Name | Type | Units | Description |
---|---|---|---|
kB | byte | KB | File size |
reclen | byte | KB | Record length used for the I/O operation |
write | byte | KB/s | Performance of writing a new file |
rewrite | byte | KB/s | Performance of writing a file that already exists |
read | byte | KB/s | Performance of reading an existing file |
reread | byte | KB/s | Performance of reading a file that was recently read |
random read | byte | KB/s | Performance of reading a file with accesses being made to random locations within the file |
random write | byte | KB/s | Performance of writing a file with accesses being made to random locations within the file |
bkwd read | byte | KB/s | Performance of reading a file backwards |
record rewrite | byte | KB/s | Performance of writing and re-writing a particular spot within a file |
stride read | byte | KB/s | Performance of reading a file with a strided access behavior. An example would be: Read at offset zero for a length of 4 Kbytes, then seek 200 Kbytes, and then read for a length of 4 Kbytes and so on. |
rwrite | byte | KB/s | Performance of writing a new file using the library function fwrite() |
rrewrite | byte | KB/s | Performance of writing an existing file using the library function fwrite() |
fread | byte | KB/s | Performance of reading a file using the library function fread() |
freread | byte | KB/s | Performance of reading a file that was recently read using the library function fread() |