The entire collaboration of development and deployment sites represents an impressive network of highly capable experts. Much of what we learn locally through experiment and experience is hard-earned and ripe for sharing with others in quick-take format. As a deployment or development site, this is an invitation to share your knowledge and publish to this outlet.
HPSS Tech Topics
TECH TOPICS CONTENT DISCLAIMER
HPSS community Tech-Topics are meant as a vehicle for information exchange by HPSS deployment partners, and do not represent authoritative recommended practices by the HPSS Collaboration. The subject matter is meant for community consideration purposes only. Content accuracy is not the responsibility of IBM or the HPSS Collaboration. For further information, please Contact Us.
Published Tech Topics
ZFS ZVOL Settings on Commodity HDD Hardware For Use By HPSS Disk Movers
Submitted By: LLNL Livermore Computing HPC Archive
We have shown how spending some time tuning before application integration can increase HPSS disk mover performance. With ZFS ZVOLs we have shown that using the default tuning parameters results in poor performance. Large gains in performance can be had by setting ZFS volume blocksize, maximizing the hardware drive pool layout, setting ZFS readahead options for improved read performance, and increasing ZFS’s ability to absorb more workload variation before throttling to improve write performance.