Per Rick's LUG presentation, there are still a number of optimizations for "lfs find -printf" that were not included in the original patch https://review.whamcloud.com/45136 "LU-10378 utils: add formatted printf to lfs find" landing that should still be addressed:
- selective fetching of metadata attributes. In particular, fetching the projid for a file requires an extra syscall that is unnecessary if the projid is not being printed, at least until LU-12480 is implemented. Most of the other MDT attributes are "free" once any attribute is read for a file, so it probably doesn't make sense to micro-optimize here.
- pre-parsing of the -printf argument string (assuming this actually shows up in the CPU profile, I'm not sure if it is actually important vs. stat/RPC overhead)
- maybe others, I didn't catch all of them
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LU-15837 "lfs find -printf" improvements
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LU-16560 'lfs find -printf %w' does not print birth time
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