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This weblog brings you news on Greenhost and recent developments in the areas of sustainability, privacy, web hosting, Internet and anything else we think is relevant.

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Multi-queue network interfaces with SMP on Linux

Building a router with Linux is a viable alternative to commercial products in many applications. In this article, we explore the process of optimising Linux for the best packet-forwarding performance by exploiting symmetric multiprocessing (SMP) and Ethernet interfaces with multiple queues. We take advantage of the Linux kernel features known as Receive Packet Steering (RPS), Transmit Packet Steering (XPS), and IRQ affinity.

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Spam? Not Spam? Tracking a hijacked Spamhaus IP

Today we noticed we that a lot of our incoming email was being marked as spam. Since this included many messages that were clearly not spam, we decided to investigate more deeply. We found that a third party was subverting the Spamhaus service using a routing-based attack.

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Douwe Schmidt about Freedom of press and Greenhost

"On the fight for liberty" - Guestblog by Lawrence Lessig

Today, in America, we celebrate the declaration of our independence from Britain. If you read the list of wrongs that led those Americans to "dissolve the bands" which tied them to their forebears, and contrast them to what's happening in Syria today, you can see that in tyranny too, human kind has made real progress. We distract ourselves with a million other things, but distraction doesn't change reality: thousands have died; thousands more are being held; tyranny still lives.

Bassel Khartabil by Joi Ito, on Flickr  

One of our own, Bassel Khartabil, is one of those thousands. Bassel is...

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You Lie, but will your mobile?

Lies are everywhere, not only in our daily interaction but also institutionalised in culture, religion and government. People tell 6 to 10 lies a day, but technology is unable to keep. Our devices will mostly tell the truth whether that is our intention or not.

The notion that all information should be available all the time (as on the internet) is actually a very new notion.

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