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Simon Leinen
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464 followers
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You say "the internet", I say "the Internet"...
My friend Nick Feamster recently twote  something that resonated with me: I still bristle whenever I read Internet with a lowercase "i".  The Internet is one specific instance of an "internetwork". People who write editorial style guides for tech should be ...
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Simon Leinen commented on a post on Blogger.
Very nicely done. I tried it on g.leinen.ch and it worked flawlessly on first try. Almost boring! To upgrade to ECC I had to use the gcloud CLI, but that was painless too.
DNSSEC now available in Cloud DNS
DNSSEC now available in Cloud DNS
cloudplatform.googleblog.com
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Google Code Jam 2017 in Lisp: Round 1B/1C
Online round 1 was done on three dates again this year. The first (1A) fell in the middle of the night so I skipped it. Round 1B Problem A: Steed 2: Cruise Control I attempted the second, 1B, but I was distracted by important household chores. That's also w...
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Enabling BBR on Ubuntu Xenial
BBR (Bottleneck Bandwidth and RTT) is a novel congestion control scheme for TCP. It was developed by several Google engineers and has been in use on Google.com and Youtube.com's servers. See the PERT KB for more background. Here's how you can enable it on a...
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Simon Leinen commented on a post on Blogger.
Tolle Arbeit und tolle Fotos, vielen Dank! Ich bin ein riesiger Fan von HDR+ und warte gespannt darauf, was die Fortschritte der Software noch bringen.

Anfang der 1980er war unser Physik-Leistungskurs zu Besuch bei der DLR (damals noch DFVLR) in Köln mit Vortrag von Ulf Merbold, dem ersten Bundesrepublikaner im Weltraum. Er hat auch ein paar schöne Fotos gezeigt, die er dort gemacht hatte. Mir ist vor allem sein Zitat in Erinnerung geblieben: "Kaum zu glauben, aber dieses Foto habe ich mit einer einfachen Hasselblad gemacht!"
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Google Code Jam 2017 in Lisp: Qualification Round
In 2016 I was quite happy with my performance in GCJ, even though I didn't make it past Round 1 . So despite being quite busy, I registered for the 2017 edition as well. The Qualification Round happened yesterday. It lasted for 27 hours, starting at 1AM in ...
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Google Code Jam 2016 in Lisp: Round 1B/1C
After failing to qualify in round 1A  in this year's Google Code Jam, I had two more chances to advance to round 2. Round 1B In round 1B, I only managed to solve the first problem, Getting The Digits .  It took me quite some time, but eventually I found the...
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Google Code Jam 2016 in Lisp: Round 1A
Having survived (like 96% of all Lispers and 81.5% of the wider population) the Qualification Round , I'm trying to pass the first "real" round. As expected, things are getting much more serious now! Round 1 is held in three sub-rounds, and you can particip...
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Google Code Jam 2016 Qualification Round in Lisp
This year I registered for Google Code Jam again. The qualification round was this weekend, and I submitted solutions in Lisp.  This time I used SBCL with GNU Emacs and SLIME as the IDE, rather than Allegro Common Lisp with GNU Emacs and Franz Inc's emacs-l...
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Interesting reference to #CoDel  and #Bufferbloat  in an article about systems reliability in Facebook's large and fast-evolving system.
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