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Olof Johansson
Works at Google
Attended Luleå University of Technology
Lives in Belmont, CA
2,861 followers|1,089,876 views
Have him in circles
2,861 people
Google ChromeOS. Mostly linux kernel stuff.
  • Google
    2010 - present
  • Agnilux
    2009 - 2010
  • Apple
    2008 - 2009
  • PA Semi
    2005 - 2008
  • IBM
    2000 - 2005
  • Effnet
    1997 - 2000
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Belmont, CA
Austin, TX - Luleå, Sweden - Skellefteå, Sweden
Swede in California
  • Luleå University of Technology
    1992 - 1998
  • Balderskolan
    1989 - 1992
Basic Information


Olof Johansson

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Optical experiments.

World wide stout. Fantastic.
Renaud Lepage's profile photoOlof Johansson's profile photoDavid Anders's profile photoDenys Dmytriyenko's profile photo
Your drink appears to have drunk too much
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Gotta love free gogo inflight when you have a Chromebook.

Not that there's enough bandwidth to do all that much, but it's enough to check your email and waste some time reading stuff.
Gregory P. Smith's profile photoBen Pfaff's profile photoEric Jones's profile photoOlof Johansson's profile photo
I go through chromebooks from work quite a bit and travel little enough that for all intents and purposes my experience is that of unlimited access. :) In reality I think it is 12 passes for free.

+Gregory P. Smith: Yeah, I've had less than ideal experiences when tethering over WiFi too but I thought we had addressed some of them. I'll follow up after my travels.
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Olof Johansson

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Neat, but considerably more expensive than Digital Ocean et al.
miniNodes offers dedicated hosting using ARM-based microservers (based on the Cubieboard/Allwinner A20)
Janne Grunau's profile photoManish Jaggi's profile photo
I think a farm of cubieboards/trucks can be used for android test beds
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Olof Johansson

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In order to measure efficiently the drag latency on touchpads, the Chrome OS team has handcrafted a USB device named Quickstep. 

The video below shows you it consists of a laser that lays across the touchpad and hits a phototransistor on the other side. Each time the laser is broken/unbroken by a finger in-between the sensor and the laser, the device reports it immediately over USB.

Learn more about Quickstep by reading the official documentation at 

Benoit Chesneau's profile photoCharles Mooney's profile photoKeith Kyzivat's profile photoSaulius Krasuckas's profile photo
Thanks Marek, I will take a look.
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Olof Johansson

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This was at the top of my feed this morning. blink blink rubs eyes
ron minnich's profile photomukesh agrawal's profile photoLuigi Semenzato's profile photoSaulius Krasuckas's profile photo
But I just cleaned them!
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Have him in circles
2,861 people

Olof Johansson

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1) Cloning a fresh kernel repo over ~.5-1Mbps is painful. I should probably tether over cell phone instead.


[And with that, I promise to avoid much more hockey commentary unless the sharks do the impossible and actually perform during the playoffs]
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I och med 4-0 i matcher i finalserien mellan Skellefteå AIK och Färjestad BK står det ikväll klart att Skellefteå AIK är svenska mästare i ishockey 2014. Föreningen tar därmed sitt sitt tredje guld genom tiderna och sällar sig till den exklusiva skara av lag som har två raka inskriptioner i Le Mat-pokalen!
Vadim Bendebury's profile photo
speaking of hockey, I don't remember if I showed you this one: Funny Hockey Commercials - Finnish Training 
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Olof Johansson

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8-1!? In a final game? This isn't a competition any more. I guess it hasn't been for quite a while, but this is insane.

It'd sort of be nice to let FBK win on Monday so the gold game is at home, but I don't see that happening. Doesn't matter much for me anyway, given that I'm nowhere near. :)
Olof Johansson's profile photoAnders Darander's profile photo
Yeah, the game definitely seems to be over.

Though, we haven't given up yet, FBK still has a slim chance...

Heja FBK! 
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Olof Johansson

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6-2!!   \o/

Two down, two to go... 

And now back to your regular schedule of tech topics in English...
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It used to boring with a safe outcome in the 90s, when they were always loosing. Now its the opposite, and I must say I prefer this kind of boring. 
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Olof Johansson

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Brandy Johansson's profile photoAnders Darander's profile photo
Nope, we need at least 4 more...
It's the only way for FBK.
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Olof Johansson

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I just finished reading the book, definitely recommended.

I know I'm less likely to care about the whiners from wall street over kernel latency variations now, knowing that any slowdown we add is actually directly beneficial to the general public as a whole, at least as to how it affects their systems.

The way these guys are gorging on our retirement funds and general investors is plain disgusting. It will be interesting to see how IEX does over time.
It's a good book, and one that everyone should read.

Oh yeah, Linux is the thing that this whole ecosystem runs on, which is nice to know, it can be used for both good and evil...
The bestselling author explains the uproar caused by his new book: "This time I punched Wall Street in the balls"
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