[Btrfs-users] btrfs benchmarks

[Ales Blaha]

Hi,

I`ve find about BtrFS just this week, so I`ve not tested it so far. I`ll do it as soon as I got a spare disk to experiment with. But, I`ve two questions regarding BtrFS. First, do you plan inclusion of BtrFS into mainline kernel and if so, when do you expect this to happen? Second, I would like to see some more benchmarks of BtrFS, so far you provided comparison to Ext3 and XFS, which is good, but, as far as I understand one of the main BtrFS targets is performance on small files, especially when there are large number of them. Ext3 is a general purpose FS, and as such it deals with small files rather inefficiently. XFS handles large number of files pretty well, however it has been optimised for opposite type of workload, that is for streaming very large files. Hence it would be more telling to compare performance of BtrFS with a file systems that targets similar workloads. Most prominent example is perhaps ReiserFS, especially its 4th version. I know that it is not in the kernel, and that the current situation around Hans Reiser and Namesys might preclude this to happen altogether, but there are still many people that do use it. Including me. Thus my second question is: you plan to benchmark BtrFS against other file systems, namely Reiser4, in future development stages? This would allow people familiar with performance and space efficiency on small files of Reiser4 to see how good the BtrFS really is. Thank you for your answers.

Best regards

Ales Blaha



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