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by Throw73747 866 days ago
Ext4 is probably the worst filesystems for such task. 1e9 files is really not that much.

Old Reiserfs3 really excelled in this, Gentoo Portage had many tiny files. Today Btrfs has features like extends, where tiny (or empty) files are stored together in single inode.

For distributing image with several files(such as this example), SquashFs is the best option.