MD BMG/roadmap


 * Collect benchmark tools candidates from OpenSFS
 * Evaluate all the tools and the workloads that can benchmarked
 * Recommend a small set of MD benchmark tools to cover the majority of MD workloads
 * Collect stats from users of MD benchmarks
 * Build scripts to allow ease of use of the recommended tools
 * Write documentation for troubleshooting MD performance problems using the toolset
 * Create a special website for MD tools

We ran 3 of the benchmarks proposed with similar configurations so we can compare the benchmarks. We ran the tests on 2 Lustre FS : The results and some comments are in the pdf file format as follows:
 * First FS on 60 disk drives configured in 6 OST's with RAID-6 (8+2) and the MDT on a RAID-5 (4+1) flash devices
 * Second on 20 SSD drives configured in 2 OST's with RAID-6 (8+2) and the MDT on a RAID-5 (4+1) flash devices
 * 1) mdtest summary
 * 2) Postmark summary
 * 3) Netmist MPI summary

Please note that I used iostat for monitoring the utilization of the devices and that the metadata set was 3x larger than the cache size of the MDS.

Return to Metadata Performance Evaluation page.