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SSUG::Digital: Spectrum Scale Expert Talks – Update on Performance Enhancements in Spectrum Scale
10th September 2020 @ 16:00 - 17:30 BST
Update on File Create and MMAP performance, optimised code for small DIO.
Spectrum Scale is a highly scalable, high-performance storage solution for file and object storage. IBM continues to enhance Spectrum Scale performance, in response to recent hardware advancements and evolving workloads.
This presentation will discuss performance related improvements in Spectrum V5, focusing on enhancements made in support of AI and HPC use cases, including improvements to MMAP reads, file create performance, and small direct IO. In addition we will review some performance numbers measured on the IBM ESS 5000.
Q: I assume copy of these charts will be posted to Spectrum Scale User Group “Presentations” web page?
A: Yes, for all episodes the slides and video should be posted afterwards.
Q: Please expand on other areas of performance improvements within GPFS that IBM is working on now?
A: Which areas would you like to see improved?
Q: Will prefetch still happen after the slow second IO?
A: Regarding ‘will prefetch still happen after the slow second IO’ – I know that Ulf said we should handle any more prefetch questions in another talk, but let me just comment on one case: we make decisions to prefetch after the associated I/Os are complete, so prior to prefetch kicking in, a slow I/O might delay the decision to start prefetching.