Messages in this thread | | | Subject | Ext3 vs NTFS performance | Date | Tue, 1 May 2007 13:43:18 -0700 | From | "Cabot, Mason B" <> |
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Hello all,
I've been testing the NAS performance of ext3/Openfiler 2.2 against NTFS/WinXP and have found that NTFS significantly outperforms ext3 for video workloads. The Windows CIFS client will attempt a poor-man's pre-allocation of the file on the server by sending 1-byte writes at 128K-byte strides, breaking block allocation on ext3 and leading to fragmentation and poor performance. This will happen for many applications (including iTunes) as the CIFS client issues these pre-allocates under the application layer.
I've posted a brief paper on Intel's OSS website (http://softwarecommunity.intel.com/articles/eng/1259.htm). Please give it a read and let me know what you think. In particular, I'd like to arrive at the right place to fix this problem: is it in the filesystem, VFS, or Samba?
thanks, Mason
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