Featured Research

from universities, journals, and other organizations

Measuring 'the cloud: 'Performance could be better

Date:
November 16, 2012
Source:
University of Twente
Summary:
Storing information “in the Cloud” is rapidly gaining in popularity. Yet just how do these services really work? Researchers have completed the first comprehensive analysis of Dropbox, a popular service that already has 100 million users. One shortcoming of this service is that performance is greatly dependent on the physical distance to the Dropbox servers.

Storing information "in the Cloud" is rapidly gaining in popularity. Yet just how do these services really work? Researchers from the University of Twente's Centre for Telematics and Information Technology (CTIT) have completed the first comprehensive analysis of Dropbox, a popular service that already has 100 million users. One shortcoming of this service is that performance is greatly dependant on the physical distance to the Dropbox servers.

The researchers will present their findings in a major forum, the Internet Measurement Conference (IMC2012) in Boston.

Users are fully aware of the advantages of cloud services. You can access your data from anywhere in the world, using a PC, laptop, tablet, or mobile phone. On the down side, there is no systems manager for you to call, someone who can "fix things" if your data fails to appear. Researchers from the CTIT's Design and Analysis of Communication Systems (DACS) group, together with counterparts from the Politecnico di Torino, have made the first detailed performance measurements of Dropbox (currently the most popular cloud storage service). For instance, they have examined the data exchange processes, and checked how and where the information is stored.

Hashing

Dropbox stores its information in Amazon's servers, which are located on the west coast of the United States. The administrative functions, such as hashing (slicing up and sequencing the data), take place on its own servers. If the hashes show that a file (or a part thereof) has already been stored, then Dropbox will not transmit that information a second time. Other cloud services also use this approach, to limit the volume of data exchanged. One condition for the efficient use of hashes is that users must not encrypt their data. If users ignore this requirement, they find that Dropbox's performance suddenly drops away.

Something else that is not apparent to users is the physical distance to the servers on which their data is stored. Amazon has servers throughout the world, yet Dropbox only uses those that are situated on the west coast of the US. Together with the hashing operation, this can lead to a significant drop in performance. Users who are accustomed to having immediate access to their data just have to wait longer.


Story Source:

The above story is based on materials provided by University of Twente. Note: Materials may be edited for content and length.


Cite This Page:

University of Twente. "Measuring 'the cloud: 'Performance could be better." ScienceDaily. ScienceDaily, 16 November 2012. <www.sciencedaily.com/releases/2012/11/121116085611.htm>.
University of Twente. (2012, November 16). Measuring 'the cloud: 'Performance could be better. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2012/11/121116085611.htm
University of Twente. "Measuring 'the cloud: 'Performance could be better." ScienceDaily. www.sciencedaily.com/releases/2012/11/121116085611.htm (accessed September 30, 2014).

Share This



More Computers & Math News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Apple Releases 'Shellshock' Fix Despite Few Affected Users

Apple Releases 'Shellshock' Fix Despite Few Affected Users

Newsy (Sep. 29, 2014) Apple released a security fix for the "Shellshock" vulnerability Monday, though it says only "advanced UNIX users" of OS X need it. Video provided by Newsy
Powered by NewsLook.com
Do Video Games Trump Brain Training For Cognitive Boosts?

Do Video Games Trump Brain Training For Cognitive Boosts?

Newsy (Sep. 29, 2014) More and more studies are showing positive benefits to playing video games, but the jury is still out on brain training programs. Video provided by Newsy
Powered by NewsLook.com
New Facebook Ad Platform Goes Where You Go On The Web

New Facebook Ad Platform Goes Where You Go On The Web

Newsy (Sep. 29, 2014) Called Atlas, the platform allows advertisers to place ads based on Facebook info on sites outside of Facebook. Video provided by Newsy
Powered by NewsLook.com
Google Tightens Requirements For Android Manufacturers

Google Tightens Requirements For Android Manufacturers

Newsy (Sep. 27, 2014) Phonemakers who want to use Google’s software in their devices will have to stick to more stringent requirements. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins