It would be interesting to know how well Spectrum Scale large directory and small file features work in these sort of DB-ish applications. You might want to optimize by creating a file system provisioned and tuned for such application... Regardless of file system, `ls -1 | grep ...` in a huge directory is not going to be a good idea. But stats and/or opens on a huge directory to look for a particular file should work pretty well... -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20171130/4f063b47/attachment.html>