Btrfs Gets Improved Performance On Linux 3.8 Kernel
The Btrfs file-system updates for the Linux 3.8 kernel will feature performance improvements among other work. Btrfs RAID 5/6 support is also to be published this week.
Here's the key part of the Btrfs 3.8 feature pull request from Chris Mason:
In terms of line count, most of the code comes from Stefan, who added the ability to replace a single drive in place. This is different from how btrfs normally replaces drives, and is much much much faster.The performance improvements will be much appreciated since with the EXT4 vs. Btrfs vs. XFS benchmarks from the Linux 3.7 kernel, the next-generation Btrfs file-system lost in a number of the test cases. There's also numbers from Btrfs mount option tuning for maximum performance.
The hash collision fixes is another big item to address the recent Btrfs security vulnerability that could lead to a hash-based denial-of-service attack.
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