People who look exactly the same in all pictures (5 gifs)
views: 348501 You can look through the photo album of your friends, maybe you'll notice the same thing





Madhu's Shared Clipboard
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Chance of keeping your job if you’re WRONG more than 75% of the time
Graph by jpblue87, via our GraphJam builder.

Shared by Madhu
Facebook architecture
Our latest strategy is taken from a great post by Paul Saab of Facebook, detailing how with changes Facebook has made to memcached they have:
...been able to scale memcached to handle 200,000 UDP requests per second with an average latency of 173 microseconds. The total throughput achieved is 300,000 UDP requests/s, but the latency at that request rate is too high to be useful in our system. This is an amazing increase from 50,000 UDP requests/s using the stock version of Linux and memcached.
To scale Facebook has hundreds of thousands of TCP connections open to their memcached processes. First, this is still amazing. It's not so long ago you could have never done this. Optimizing connection use was always a priority because the OS simply couldn't handle large numbers of connections or large numbers of threads or large numbers of CPUs. To get to this point is a big accomplishment. Still, at that scale there are problems that are often solved.
Some of the problem Facebook faced and fixed:
When you read Paul's article keep in mind all the incredible number of man hours that went into profiling the system, not just their application, but the entire software hardware stack. Then add in the research, planning, and trying different solutions to see if anything changed for the better. It's a lot of work. Notice using a nifty new parallel language or moving to a cloud wouldn't have made a bit difference. It's complete mastery of their system that made the difference.
A summary of potential strategies:
You can find their changes on github, the hub that says "git."
Update: What are Amazon EC2 Compute Units?. Cloud providers charge for CPU time in voodoo units like "compute units" and "core hours." Geva Perry takes on the quest of figuring out what these mean in real life.
Shared by Madhu
Placing the word "only" in 15 different places in the sentence results in over 20 different interpretations!
In response to the apparently rampant rage of the misplaced only,and perhaps also inspired by some of William Safire's columns in The NewYork Times Sunday Magazine, I offer the following annotated examples.(Italics indicate spoken stress, and parentheses indicate the presence ofsomething that would be implicit even when spoken.) Please bear with me onthis one. You may have to devote a little patience to each case. However,a conclusion you should be able to reach with no trouble at all is that theextent of ambiguity in the written English is awesome, but that wecan hide some of it in speaking the same words -- through suitable placementof emphasis (and with the help of a tolerance or ambivalence on the part ofthe listener). May you learn to put the only ``only'' only in thecorrect place. Note that the other places that you might put theitalicized only in the previous sentence (e.g., before the first,second, third, fourth, or tenth words) also result in different meanings.
1. Only(,) I said he thought secret users may write secret data.
2. Only I said he thought secret users may write secret data.
3. I only said he thought secret users may write secret data.
4. I said only (that) he thought secret users may write secret data.
5. I said only he thought secret users may write secret data.
6. I said he only thought secret users may write secret data.
7. I said he thought only (that) secret users may write secret data.
8. I said he thought only secret users may write secret data.
9. I said he thought only secret users may write secret data.
10. I said he thought secret users only may write secret data.
11. I said he thought secret users only may write secret data.
12. I said he thought secret users may only write secret data.
13. I said he thought secret users may write only secret data.
14. I said he thought secret users may write secret data only.
15. I said he thought secret users may write secret data only.
Note that ignoring the added stress and implicit parentheticals (as onewould in written English), various of these cases would appearindistinguishable from one another, reflecting inherent ambiguity in thewritten language; these cases are 1 and 2; 4 and 5; 8 and 9; 10 and 11; 14and 15. If you are still with me, here are some suggestions to help youinterpret at least one possible meaning in each of the above cases. Evenwith stress added, some of these cases are still ambiguous. And I have completely ignored the ambiguity between Secret-level usersand users of secrets, assuming the former for simplicity.
1. But I didn't say what you said I said. What I really said was ...
2. No one else said so. Only I did.
3. I didn't really mean it. I just said it.
4. I didn't say anything else.
5. I don't think anyone else thought so!
6. But he wasn't really sure.
7. He thought only that, and did not think anything else.
8. But not Unclassified or Top-Secret users.
9. But not Secret daemon processes or administrators.
10. Ambiguous! Depending on whether there is an unspoken pause or not after only, we have one of two cases:
The writer must be a user, and a Secret user at that, to write Secret data; OR
The only thing secret users may do is write Secret data (and nothing else -- not even breathe).
11. They are permitted to write, but perhaps they are unable to.
12. But they may not read such data.
13. But they many not write Top-Secret or Unclassified data.
14. They may not write secret procedures.
15. Ambiguous! Several of the above interpretations are possible, depending on substresses, pauses, and facial expressions.
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NOTE 1, inspired by an Op-Ed piece,
Proposition 22 Author Didn't Take Grammar 101:
Improperly placed `only' opens Defense of Marriage Initiative to court challenge,
by Leo Kanowitz in the San Francisco Chronicle, 31 March 2000,
which cites the wording of Proposition 22 in the April 1999 statewideprimary election:
``Only marriage between a man and a woman will be valid or recognizedin California.''
Literally interpreted, that means that anything else between a man and awoman will not be valid or recognized, for example, legal contracts,spoken agreements, children, and a myriad of other things.It says nothing at all about the other relationships it was intended tomake invalid and unrecognized, such as same-sex partners, unions withanimals, etc. Very sloppy. The framers of Prop 22 should have readmy above discourse. PGN
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NOTE 2, 19 April 2000: Many thanks to Julie Sussman, P.P.A., for noting theerroneous placement of the italicized ``only'' in the penultimate sentenceof the first paragraph, which has now been fixed above.
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| java.text | |
| ParseException | You are not making any sense. Calm down and try again. |
Copyright © 2005 Björn Andersson

Green Gadget fans have been waiting for the holy green grail of gadgets for awhile now: the solar-powered mobile phone. And now it seems that Samsung has finally delivered on this promise with their brand new Blue Earth phone. Blue Earth is a gorgeous green touch phone that has a full solar panel on its back which can generate enough power to charge the phone. And yes - the gadget is still small enough to fit in your pocket!

As if releasing a solar powered phone wasn’t enough, Samsung is going above and beyond to achieve what they hope is the greenest phone on the market. The body of the phone is made out of recycled water bottles and has no brominated flame retardants, beryllium and phthalates - all incredibly toxic substances. That goes for the charger as well, which also meets the newer standby mode energy efficiency ratings. Granted, it is solar powered, so really, a charger?
The device is set to be energy efficient, with a new user interface making it easy to activate the phone’s energy saving mode. It also includes a pedometer, and CO2 emissions calculator, and Samsung is aiming for minimal packaging made entirely from recycled paper.
Samsung is clearly throwing the gauntlet to all phone manufacturers, and we hope to see solar cells integrated throughout the rest of their line. The phone will be unveiled on February 16th at the Mobile World Congress in Barcelona.
Via Pocketlint
