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SubjectRe: stat benchmark

> I guess it would be difficult to get close to the optimal disk schedule by
> using syslets; if a directory contains 1000 files that would require 1000
> syslets and a good I/O scheduler - that's unlikely to be feasible.

It wouldn't even get to the I/O scheduler. The VFS stat path (see
real_lookup()) is synchronous and serialized. Each stat will hold the
i_mutex of the parent directory while it waits for the file system's
lookup method to populate the inode from disk.

- z


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