Detail

Performance Data Portal

gpfs-project_10G

gpfs-project_10G

General Info

Description

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/

Dates

Collected - 2018-2-16

Filesystem

gpfs

Maximum File Size

10G

Organization

LBNL

Contributors

Liu, Zhengchun

Resource Type

IOZone

Formats

text/plain

gpfs-project_10G

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()