Top all-time · #20904
NetOptimizer
Personal blog · netoptimizer.blogspot.comsystemsprogramming
NetOptimizer is a personal blog at netoptimizer.blogspot.com about systems and programming. Since 2015, 3 different Hacker News readers have linked it 3 times. The last post was in 2017, but the archive is still widely read.
Too few sampled comments (2) to say how often HN recommends it.?
Why HN links it
HN readers link this blog for its per-packet networking calculations, such as the 67 ns per-packet time budget. Commenters cite it when discussing Linux kernel packet rates and kernel bypass.
Summarised by Claude from a sample of 2 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
The Linux Kernel Network Stack Scalability, mitigating DDoS attacks firewalling iptables netfilter connection tracking (conntrack)
What Hacker News says?
I thought I read somewhere that the fastest networking technology actually gets close to a couple hundred instructions window of processing. http://netoptimizer.blogspot.com/2014/05/the-calculations-10... Hm, 67 ns per packet. So even this local storage would be the drag in many scenarios...
Comment linking /2014/05/the-calculations-10gbits-wirespeed.html
on “Intel’s first Optane SSD: 375GB that you can also use as RAM”Submitted 10Gbit/s full TX wirespeed smallest packet size on a single CPU core as a story · 107 points
HN discussionPhysical limitations of bandwidth on packets per second: https://www.cisco.com/c/en/us/about/security-center/network-... Why the Linux kernel has a hard time processing more than 1-2M packets per core per second, and patches/improvements for the kernel: https://lwn.net/Articles/629155/ CloudFlare's kernel bypass blog post: https://blog.cloudflare.com/kernel-bypass/ A paper from NTop on doing 10G line rate packet pro…
Comment linking /search/label/10G
on “Why we use the Linux kernel's TCP stack”