Sandia National Laboratories

TEST5

Description:
Each test performed is a single-shared-file test with an increasing number of clients. In each case a stripe width of 8 is used. The number of OST's used in each test is 8. The OST's are allocated in order which in this case results in 8 OSS nodes being allocated due to the layout of the file-system. Note: this differs from test5 phase 1. The same OSS nodes are used for each test.

Purpose:
The purpose of this test is to examine the file-system performance of share file access. This test is meant to illustrate test cases where the number of clients is both less than and greater than the number of OST's. The number of OST's used was intentionally limited to enable an oversubscription rate of approximately 60:1.

Performance

AVG PER OST Performance

 

AXES:
Y- MiB/sec aggregate transfer for each datapoint
X - <clients.stripe> increasing client count from 1-496, Constant stripe count of 8 (single file).

Testing Parameters:
TEST CODE:    IOR
VERSION:    2.8.10
API:    POSIX
ACCESS:    single-shared-file
MAX OST's:    8
MAX OSS's:   8

Phase 1 - TEST5

Data in TABLE format

RAW data

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