Measuring Hyper-Threading and Turbo Boost

We often put together experiments that measure hardware performance to improve our understanding and provide insights to our hardware partners. We recently wanted to know more about Hyper-Threading and Turbo Boost. The last time we assessed these two technologies was when we were still deploying the Intel Xeons (Skylake/Purley), but…

New Spectre-Like Attacks

There’s new research that demonstrates security vulnerabilities in all of the AMD and Intel chips with micro-op caches, including the ones that were specifically engineered to be resistant to the Spectre/Meltdown attacks of three years ago. Details: The new line of attacks exploits the micro-op cache: an on-chip structure that…

Router Security

This report is six months old, and I don’t know anything about the organization that produced it, but it has some alarming data about router security. Conclusion: Our analysis showed that Linux is the most used OS running on more than 90% of the devices. However, many routers are powered…

An introduction to three-phase power and PDUs

Our fleet of over 200 locations comprises various generations of servers and routers. And with the ever changing landscape of services and computing demands, it’s imperative that we manage power in our data centers right. This blog is a brief Electrical Engineering 101 session going over specifically how power distribution…

ASICs at the Edge

At Cloudflare we pride ourselves in our global network that spans more than 200 cities in over 100 countries. To handle all the traffic passing through our network, there are multiple technologies at play. So let’s have a look at one of the cornerstones that makes all of this work……