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In the upcoming Linux 3.3 is also introduced numerous improvements to the “delayed logging” journal mode for XFS, so that the bottlenecks are eliminated when writing metadata.

XFS is a high performance file system that was developed by SGI, and often on servers, but also for ambitious users is used. The advantages of XFS to be a high in the read and write speed, but also that the file system does not require a check and an on-line augmentation is extremely fast. The weak point of XFS was previously writing metadata, such as occur for example when creating and deleting files. Here was yet hardly XFS on a single CPU also scalable, and these operations were extremely inefficient. Even with optimal settings only half the speed when creating files like ext4 was reached, some operations were 20-50-times slower than with ext4.
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In May 2011, in an extended report by Michael Rubin in charge of data storage systems at Google, has sounded a detailed comparative review of modern file systems, in which, besides listing their advantages and disadvantages were given and some predictions about the future development and needs of the information industry in this the field.

In particular, it examined the ability of existing file systems (FS) to adapt to the challenges already immediate future (the so-called zetta-flood data), and therefore, of all the FS experts have been allocated the top four file systems, originally designed with the most satisfaction exacting demands and requests. Here’s a quick translation of the report, Google for each of the selected file system:
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