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Linux

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September 07, 2015 9:52AM

Kernel bypass

In two previous posts we've discussed how to receive 1M UDP packets per second and how to reduce the round trip time. We did the experiments on Linux and the performance was very good considering it's a general purpose operating system....

May 11, 2015 10:08AM

CloudFlare "Interview Questions"

For quite some time we've been grilling our candidates about dirty corners of TCP/IP stack. Every engineer here must prove his/her comprehensive understanding of the full network stack. For example: what are the differences in checksumming algorithms between IPv4 and IPv6 stacks?...

March 05, 2014 12:00AM

It's Go Time on Linux

Some interesting changes related to timekeeping in the upcoming Go 1.3 release inspired us to take a closer look at how Go programs keep time with the help of the Linux kernel. Timekeeping is a complex topic and determining the current time isn’t as simple as it might seem at first glance....

Linux Go DDoS Google Attacks