EXT4 (Extended Filesystem Fourth Generation) is a journaling filesystem under Linux, which is currently stable, but received some direct I/O performance improvement patches in the Linux 6.3 merge window, improving write speed .
The patch comes from Huawei engineer Zhang Yi, who adjusted the EXT4 system of Linux 6.3 in the latest patch , allowing multiple processes to perform direct I/O writes to pre-allocated blocks through shared inode locks without exclusive locks. When multiple processes no longer hold exclusive inode locks, but instead use shared inode locks, pre-allocated blocks are overwritten, which can have a significant performance impact on write performance.
Zhang Yi ran some multi-threaded write tests using FIO on an Intel Xeon Gold server with NVMe SSD storage, and the results showed that this change had a significant impact on the…
The post EXT4 filesystem gets write performance improvement patch in Linux 6.3 first appeared on Lenix Blog .
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