cloudfs-devel February 2012

cloudfs-devel@lists.fedorahosted.org

2 participants
2 discussions

informations
by julio MBA 29 Feb '12

29 Feb '12

Hello, I am develloping an ftp client which could interact with Swift and I've found that cloudfs could help me to be the gateway between both. but my problem is to know how to link my ftp client with cloudfs and the swift as well. So please if you have an idea let me know thanks! -- * * *" The most important battle we have as humans being is not against the others, but against our own heart and its bad desires, in others words our dark side..."* * * *Have a good day!* * * *Oneal*

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HekaFS encryption layer: benchmarks
by Edward Shishkin 01 Feb '12

01 Feb '12

Hello everyone, Here are mongo-benchmark results for 1-brick volumes formatted with (1) ext4: http://file.brq.redhat.com/~eshishki/HekaFS/hekafs.ext4.html (2) xfs: http://file.brq.redhat.com/~eshishki/HekaFS/hekafs.xfs.html Legend: A) "no crypt xlator": crypt and oplock xlators are not invoked. B) "crypt xlator with trivial cipher transform": crypt and oplock xlators are invoked, cipher transform is represented by empty operator. EOFs (end-of-files) are fully handled. C) "crypt xlator with AEC-CBC cipher transform": crypt and oplock xlators are invoked, cipher transform is represented by AEC_CBC_encrypt of OpenSSL library. The link to mongo documentation can be found at the end of tables. --------------------------------------------------------------- For the client/server configuration (1) above I have also measured performance of writing/reading a large file (800M): dd writing: (dd if=/dev/zero of=/mnt/gluster/largefile bs=4K count=200000) A) 178.57 s, 4.6 MB/s (no crypt xlator) B) 226.02 s, 3.6 MB/s (crypt xlator with trivial cipher transform) C) 254.02 s, 3.2 MB/s (crypt xlator with AES-CBC cipher transform) B/A = 1.26 C/A = 1.42 dd reading: (dd if=/mnt/gluster/largefile of=/dev/null bs=4K) A) 11.2394 s, 72.9 MB/s (no crypt xlator) B) 13.4892 s, 60.7 MB/s (crypt xlator with trivial cipher transform) C) 26.4549 s, 31.0 MB/s (crypt xlator with AES-CBC cipher transform) B/A = 1.20 C/A = 2.36 RAW dd reading of ext4 large file on the server: (dd if=/root/exp2/edward/largefile of=/dev/null bs=4K) 9.69625 s, 84.5 MB/s ------------------------------------------------------------------ Server and client volfiles for (A) and (B) attached. HekaFS sources: git://git.fedorahosted.org/CloudFS.git (branch "aes"). Common comments: Current implementation of encryption support leads to performance drop from 1.28 till 2.36 times depending on operations (for bricks formatted with ext4). The most affected operation is reading a largefile. The least affected operation is creating a large set of small files. Thanks, Edward.

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cloudfs-devel February 2012