Measuring Hyper-Threading and Turbo Boost
10/05/2021
Contemporary x86 processors implement some variants of Hyper-Threading and Turbo Boost. We decided to learn about the implications of these two technologies....
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The EPYC journey continues to Milan in Cloudflare’s 11th generation Edge Server
08/31/2021
At Cloudflare we aim to introduce a new server platform to our edge network every 12 to 18 months or so, to ensure that we keep up with the latest industry technologies and developments. ...
Branch predictor: How many "if"s are too many? Including x86 and M1 benchmarks!
05/06/2021
Is it ok to have if clauses that will basically never be run? Surely, there must be some performance cost to that......
Why Cloudflare Chose AMD EPYC for Gen X Servers
03/01/2020
Looking back at this week's posts on the design, specifications, and performance of Cloudflare’s Gen X servers using AMD CPUs. Every server can run every service. This architectural decision has helped us achieve higher efficiency across the Cloudflare network. ...
Securing Memory at EPYC Scale
02/28/2020
At Cloudflare, we encrypt data both in transit (on the network) and at rest (on the disk). Both practices address some of the most common vectors used to exfiltrate information and these measures serve to protect sensitive data from attackers but, what about data currently in use?...
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February 27, 2020 2:00 PM
Gen X Performance Tuning
We have partnered with AMD to get the best performance out of this processor and today, we are highlighting our tuning efforts that led to an additional 6% performance. Thermal design power (TDP) and dynamic power, amongst others, play a critical role when tuning a system. ...
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February 26, 2020 12:00 PM
Impact of Cache Locality
Our Gen X servers process more requests per second per core than our previous fleet. The AMD 2nd Gen EPYC 7642 processor’s large L3 cache minimizes L3 cache misses, and the time-savings add up quickly....
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February 25, 2020 2:00 PM
An EPYC trip to Rome: AMD is Cloudflare's 10th-generation Edge server CPU
As we started looking at production ready systems to power our Gen X solution, we took a long look at what is available to us in the market today and we’ve made our decision. We’re moving on from Gen 9's 48-core setup of dual socket Intel Xeon Platinum 6162's to a 48-core single ...
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February 24, 2020 1:00 PM
Cloudflare’s Gen X: Servers for an Accelerated Future
We designed and built Cloudflare’s network to be able to grow capacity quickly and inexpensively; to allow every server, in every city, to run every service; and to allow us to shift customers and traffic across our network efficiently....
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