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Date: Sun, 31 Jul 2011 22:57:52 -0400 From: Eric Whitney <eric.whitney@...com> To: Ext4 Developers List <linux-ext4@...r.kernel.org> Subject: 2.6.39 and 3.0 scalability measurement results 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@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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