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IBM System Storage Ideas Portal


This portal is to open public enhancement requests against IBM System Storage products. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (https://ideas.ibm.com).


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Welcome to the IBM Ideas Portal (https://www.ibm.com/ideas) - Use this site to find out additional information and details about the IBM Ideas process and statuses.

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Status Delivered
Created by Guest
Created on Aug 4, 2021

Metadata performance on a busy filesystem is poor

Spectrum Scale does not prioritize small I/O, notably metadata access, over large block I/O. This means that a busy filesystem, particularly one with many large blocks to transfer, suffers from poor metadata performance. The user experience is that the Spectrum Scale client becomes slow and unresponsive, even though large transfers are efficiently moving data. This is a particular problem on multi-user clusters (such as those running LSF or Slurm) because multi-tenant users have great influence over other users' performance. The end-user complaint is that interactive commands such as ‘ls' are unresponsive, but as Spectrum Scale administrators we see a ‘healthy' cluster.

Idea priority Urgent