Linux 2.6.39: XFS Speeds-Up, EXT4 & Btrfs Unchanged
Phoronix: Linux 2.6.39: XFS Speeds-Up, EXT4 & Btrfs Unchanged
While we have already delivered a number of benchmarks from the Linux 2.6.39 kernel, surprisingly we have not yet published any new file-system benchmarks from this latest stable Linux kernel release. Fortunately, that has changed today with a fresh round of Btrfs, EXT4, and XFS file-system benchmarks on the Linux 2.6.39 kernel and compared to the preceding 2.6.38 and 2.6.37 kernel releases.
Normally people (like myself) complain if they are unhappy with the article.
So, this time I'd like to say that this was a good article. You provided some useful explanations, and also linked to the optimizations at the end which was informative
Amazing. This is the first time I've ever seen a comment on Phoronix saying they liked an article. I'm so used to seeing nothing pure hatred in every article comment. Maybe there is hope after all.
Originally Posted by yesterday
Multicore CPU Usage
I have a hexacore now so I'm interested in a filesystem that makes good use of multiple cores. Would btrfs be much faster with compression enabled if a system had many cores? Could the compression/decompression be done by a GPU?
Remember the Commodore VIC 20
For some reason I was sitting here reading this excellent article and was reminded of the VIC 20.
It's possible that the compression could be offloaded to another core(s) or a GPU, but compression is often a fairly serial process, so depending on the algorithm, you'd probably not get much of a speedup.
Originally Posted by flammon
Also, for the small block sizes being compressed, you'd probably not benefit from GPU compression/decompression as the round trip to the GPU and the computation startup/finish costs would probably exceed any time benefit from the parallelism you might be able to extract.
Offloading the compression/decompression to a separate thread on the CPU might be possible, and that's where I'd probably start poking around (if they're not already doing this).
JFS is omitted from the comparison again
What is the reason for this? Isn't it as popular as XFS?
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