I've posted the results of my 2.6.38/2.6.39 and 2.6.39/3.0 ext4
scalability measurements and comparisons on a 48 core x86_64 server at:
http://free.linux.hp.com/~enw/ext4/2.6.39
http://free.linux.hp.com/~enw/ext4/3.0
The results include throughput and CPU efficiency graphs for five simple
workloads, the raw data for same, and lockstats as well.
The data cover ext4 filesystems with and without journals. For
reference, ext3, xfs, and btrfs are included as well.
The 2.6.38/2.6.39 results mainly show the clear scalability benefit of
making the mblk_io_submit mount option default behavior for ext4
filesystems with journals - see the large_file_creates throughput plot.
In the way of more recent news, the 2.6.39/3.0 results indicate little
change for ext4 either with or without journals.
Thanks,
Eric
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
