Posts Tagged ‘Skype’

Boost Productivity By Limiting Time Spent Online

Tuesday, January 19th, 2010

The internet used to eat away a large portion of my day, especially social networking sites, forums, blogs or information-dense sites where the amount of “interesting” information is so much, you never actually get to the point where you find the information you were looking for in order to work productively. Same goes for sites like Linkedin where you are supposedly networking amongst business people, yet very few people actually stick to using it as a networking tool and before you know it, you’ll be browsing and browsing and browsing Linkedin profiles the whole day instead of actively networking amongst real business people to get some real business done.

The same principle applies to instant messaging; even though it’s a very useful tool to stay in touch, how much does your productivity suffer when you have all 600+ myspace contacts, 400+ facebook contacts, 150+ GTalk contacts, 50+ YIM contacts, 50+ MSN contacts and 50+ Skype contacts loaded into Pidgin at the same time and one of those people decides to start a conversation every now and again. Pretty soon, you’ll have your whole desktop full of chat windows and any form of productivity will cease to exist. I find that MSN and YIM contacts are the biggest chatters (statistically proven – anyone has a 100 Million to waste in researching to why this is the case?) as well as facebook contacts who assume you’re available for chat since you’re always displaying online (thanks to the facebook plugin for Pidgin). I used to have a custom developed MXIT plugin for Pidgin as well, but removed it within the first few days after realizing that a permanent online presence on MXIT means a gazillion “howzit” popups a day. (haven’t used my account in years, wonder if it still exist, lol) Eventually I decided to just use Skype and ONLY open Pidgin (with all the IM protocols enabled) when I really don’t have anything better to do (which hardly happens).

Those who complain that they can’t get hold of me, I have told to send an email or use the good ol’ telephone. It actually reminds me of an infamous computer science lecturer who gave up on email and placed a permanent auto-responder on his email account telling people to fax him if it’s important while asking his secretary to choose the three most important faxes each day and to throw the rest away. He only responded to the three most important faxes and then continued his research – guess why he received over a thousand faxes day …

One tool which will time your online presence is called TimeTracker, a Firefox plugin which will simply display a clock on your status bar telling you that you have spent x amount of time inside Firefox in the last 24 hours.

TimeTracker

TimeTracker

Even though this might motivate some people to waste less time online, it’s hardly effective if a lot of the work you’re doing, requires an open browser.

The solution is LeechBlock, limit your time per group of sites to x amount of minutes a day (or per any time period you want) and let Firefox physically block your access to these sites after you run out of time credits. I’ve allocated a whooping total of ten minutes to all social networking sites during a 24 hour day, that means once I access one of the social networking sites on the list, the timer starts running for all of them and after ten minutes, all of them are blocked.

LeechBlockLeechBlock is a simple productivity tool: an extension for the Firefox web browser designed to block those time-wasting sites that can suck the life out of your working day. (You know: the ones that rhyme with ‘Blue Cube’, ‘Pie Face’, ‘Space Hook’, ‘Hash Pot’, ‘Sticky Media’, and the like.) All you need to do is specify which sites to block and when to block them.

You can specify up to six sets of sites to block, with different times and days for each set. You can block sites within fixed time periods (e.g., between 9am and 5pm), after a time limit (e.g., 10 minutes in every hour), or with a combination of time periods and time limit (e.g., 10 minutes in every hour between 9am and 5pm). With the ‘lockdown’ feature, you can block sites immediately for a specified duration. You can also set a password or random access code for LeechBlock’s options, just to slow you down in moments of weakness!

The sites to block can be specified using wildcards (e.g., *.somesite.com) and exceptions (e.g., +allowme.somesite.com).

LeechBlock also keeps track of the total amount of time you have spent browsing the sites in each block set.

Back at varsity, a buddy used to disassemble his computer when it was exam time, very extreme, but it seemed to have worked for him. My current setup of productivity boosting tools are (and have been) working wonders for me (combined with the fact that I don’t sleep nearly as much as the average person which gives me even more time). Uninstalling useless, time-consuming social networking applications will also free a lot of your time, especially applications like humanpets, farmville and the tons of other garbage / useless applications people get sucked into.

Feel free to share what productivity boosting methods and tools work for you.

How much bandwidth does a Skype VOIP call use?

Monday, February 9th, 2009

After spending a lot of hours on Skype voice calls over the last few days, I got curious on how much bandwidth Skype uses for voice calls and whether it’s really worth setting up a VOIP server to get a dedicated VOIP number.

On the Skype website they say:

Skype automatically selects the best codec depending on the connection between yourself and the person you are calling. On average, Skype uses between 3-16 kilobytes/sec depending on bandwidth available for other party, network conditions in between, callers CPU performance, etc.

That’s about 10.54 MB to 56.25 MB per hour which is not bad at all.

After browsing through the Skype forum, people quoted numbers that are way different than the above numbers and speculated on how exactly the Skype protocol works.

The Skype protocol does not use a straight SIP protocol, instead it uses a Peer-to-Peer Internet Telephony protocol which was developed by KaZaa in 2003. Doesn’t that send a chill down your spine? KaZaa was well known for infecting PCs with adware in order to keep themselves in business (whatever that business was)

Kazaa is commonly used to exchange MP3 music files over the Internet. However it can also be used to exchange other file types, such as videos, applications, and documents. The official Kazaa client can be downloaded free of charge, however, it is bundled with adware and spyware, even though there are “No spyware” claims found on Kazaa’s website. Throughout the past few years, Kazaa’s developing company has been the target of many copyright-related lawsuits.

Luckily eBay bought out Skype in September 2005 (for 2.6 Billion), although I doubt KaZaa would really have gone as far as to use Skype as a piece of Zombie software (my definition for software that has two purposes, one is to be useful in some way and second is to infect PCs that find these services useful)

Two computer scientists, Salman Baset and Henning Schulzrinne reverse engineered the Skype protocol back in 2004 and posted a paper on their findings if you’re interested in completely understanding the Skype protocol and why it uses more bandwidth in some cases (when you’re a supernode for example): cucs-039-04

An old version of Skype, version 2.5 reverse engineered on low level if you’re REALLY interested in understanding what’s going on under the hood: vskype-part1 & vskype-part2

Trying to measure it using netmeter is giving inconclusive results, the amount of bandwidth being used is varying too much to be able to give exact figures, I guess that’s the way it is with P2P protocols.


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