The ATLAS Lustre storage performance data collected at ORNL with the IOZone tool. https://www.olcf.ornl.gov/for-users/system-user-guides/summit/file-systems/
Collected - 2017-12-22
atlas
50G
ORNL
Rao, Nagi
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() |