Improving ext4: bigalloc, inline data, and metadata checksums
Posted Dec 2, 2011 18:52 UTC (Fri) by walex
In reply to: Improving ext4: bigalloc, inline data, and metadata checksums
Parent article: Improving ext4: bigalloc, inline data, and metadata checksums
JFS or XFS being the preferable filesystem on normal Linux use. Believe me, I've tried them both, benchmarked them both, and on almost all counts ext4 outperforms the two by a really wide margin (note that strictly speaking I'm not comparing the filesystems but their Linux implementations). In addition any failures have tended to be much worse on JFS and XFS than on ext4.
Most well done benchmarks I have seen show them mostly equivalent performance, with XFS leading the group in scalability, JFS pretty good across the field, and 'ext4' just like the previous 'ext's being good only on totally freshly loaded filesystems as it packs newly created files pretty densely, and when there is ample caching (no use of 'O_DIRECT'), and both fresh loading and caching mask its fundamental, BSD FFS derived, downsides.
It is very very easy to do meaningless filesystem benchmarks (the vast majority that I see on LWN and most others are worthless).
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