Detail

Performance Data Portal

ccs_dtn01_atlas1_2G_default

ccs_dtn01_atlas1_2G_default

General Info

Description

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/

Dates

Collected - 2017-11-8

Filesystem

atlas

Maximum File Size

2G

Organization

ORNL

Contributors

Rao, Nagi

Resource Type

IOZone

Formats

text/plain

ccs_dtn01_atlas1_2G_default

Field Metadata

IOZone Fields

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()