تقرير
The Design, Implementation, and Deployment of a System to Transparently Compress Hundreds of Petabytes of Image Files for a File-Storage Service
| العنوان: | The Design, Implementation, and Deployment of a System to Transparently Compress Hundreds of Petabytes of Image Files for a File-Storage Service |
|---|---|
| المؤلفون: | Horn, Daniel Reiter, Elkabany, Ken, Lesniewski-Laas, Chris, Winstein, Keith |
| المصدر: | Proc. NSDI 2017, Boston. p1-15 |
| سنة النشر: | 2017 |
| المجموعة: | Computer Science |
| مصطلحات موضوعية: | Computer Science - Multimedia, Computer Science - Distributed, Parallel, and Cluster Computing, Computer Science - Graphics, Computer Science - Networking and Internet Architecture |
| الوصف: | We report the design, implementation, and deployment of Lepton, a fault-tolerant system that losslessly compresses JPEG images to 77% of their original size on average. Lepton replaces the lowest layer of baseline JPEG compression-a Huffman code-with a parallelized arithmetic code, so that the exact bytes of the original JPEG file can be recovered quickly. Lepton matches the compression efficiency of the best prior work, while decoding more than nine times faster and in a streaming manner. Lepton has been released as open-source software and has been deployed for a year on the Dropbox file-storage backend. As of February 2017, it had compressed more than 203 PiB of user JPEG files, saving more than 46 PiB. Comment: 12 pages |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1704.06192 |
| رقم الأكسشن: | edsarx.1704.06192 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |