Lessons Learned from 6 Years of IO Scheduling at ScyllaDB

Pavel (Xemul) Emelyanov Pavel is a principal engineer at ScyllaDB. He is an ex-Linux kernel hacker now speeding up row cache, tweaking the IO scheduler and helping to pay back technical debt for component interdependencies. Scheduling requests of any kind always serves one purpose: gain control over the priorities of those requests. In the priority-less system, there’s no need to schedule; just putting whatever arrives into the queue and waiting until it finishes is enough. I’m a principal engineer for

Heavy Networking 614: eBPF, Cloud-Native Networking, And Other Modern Networking Trends

Today's Heavy Networking gets deep in the guts of what’s going on with all the modern trends in networking: cloud-native, containers, eBPF, Kubernetes, DPUs, and so on. Guests Brent Salisbury and Dave Tucker give their insider’s view of developments in cutting-edge networking tech. You’ll walk away with a better idea of what to pay attention to in the months and years to come.

Heavy Networking 614: eBPF, Cloud-Native Networking, And Other Modern Networking Trends

Today's Heavy Networking gets deep in the guts of what’s going on with all the modern trends in networking: cloud-native, containers, eBPF, Kubernetes, DPUs, and so on. Guests Brent Salisbury and Dave Tucker give their insider’s view of developments in cutting-edge networking tech. You’ll walk away with a better idea of what to pay attention to in the months and years to come.

The post Heavy Networking 614: eBPF, Cloud-Native Networking, And Other Modern Networking Trends appeared first on Packet Pushers.

Internet outage in Yemen amid airstrikes

Internet outage in Yemen amid airstrikes

The early hours of Friday, January 21, 2022, started in Yemen with a country-wide Internet outage. According to local and global news reports airstrikes are happening in the country and the outage is likely related, as there are reports that a telecommunications building in Al-Hudaydah where the FALCON undersea cable lands was hit.

Cloudflare Radar shows that Internet traffic dropped close to zero between 21:30 UTC (January 20, 2022) and by 22:00 UTC (01:00 in local time).

Internet outage in Yemen amid airstrikes

The outage affected the main state-owned ISP, Public Telecommunication Corporation (AS30873 in blue in the next chart), which represents almost all the Internet traffic in the country.

Internet outage in Yemen amid airstrikes

Looking at BGP (Border Gateway Protocol) updates from Yemen’s ASNs around the time of the outage, we see a clear spike at the same time the main ASN was affected ~21:55 UTC, January 20, 2022. These update messages are BGP signalling that Yemen’s main ASN was no longer routable, something similar to what we saw happening in The Gambia and Kazakhstan but for very different reasons.

Internet outage in Yemen amid airstrikes

So far, 2022 has started with a few significant Internet disruptions for different reasons:

1. An Internet outage in The Gambia because of a cable problem.
2. An Internet Continue reading

Technology Short Take 151

Welcome to Technology Short Take #151, the first Technology Short Take of 2022. I hope everyone had a great holiday season and that 2022 is off to a wonderful start! I have a few more links than normal this time around, although I didn’t find articles in a couple categories. Don’t worry—I’ll keep my eyes peeled and my RSS reader ready to pull in new articles in those categories for next time. And now for the content!

Networking

Servers/Hardware

Video: Machine Learning Techniques

After Javier Antich walked us through the AI/ML hype and described the basics of machine learning it was time for a more thorough look at:

  • Machine learning techniques, including unsupervised learning (clustering and anomaly detection), supervised learning (regression, classification and generation) and reinforced learning
  • Machine learning implementations, including neural networks, deep neural networks and convolutional neural networks.
You need Free ipSpace.net Subscription to access this webinar.

Video: Machine Learning Techniques

After Javier Antich walked us through the AI/ML hype and described the basics of machine learning it was time for a more thorough look at:

  • Machine learning techniques, including unsupervised learning (clustering and anomaly detection), supervised learning (regression, classification and generation) and reinforced learning
  • Machine learning implementations, including neural networks, deep neural networks and convolutional neural networks.
You need Free ipSpace.net Subscription to access this webinar.

Juniper Networks’ SD-WAN Can Now Be Operated Via Mist Cloud

Juniper Networks’ SD-WAN appliances and software can now be fully managed from Juniper’s Mist Cloud. It’s part of Juniper’s larger goal to Mist-ify its LAN and WAN portfolio. Juniper’s SD-WAN product is based on the Session Smart Routers (SSRs) from Juniper’s acquisition of 128 Technology. Customers can now use Mist Cloud to onboard SSR hardware, […]

The post Juniper Networks’ SD-WAN Can Now Be Operated Via Mist Cloud appeared first on Packet Pushers.

Edge computing in 2022: Double-digit growth

Worldwide spending on edge computing is expected to reach $176 billion in 2022, an increase of 14.8% over last year, according to new figures from analyst IDC.Edge computing started out rather modest in its use cases but has quickly expanded across industries and scope. Five years ago an edge network was a few mid-range servers in a ruggedized container. Now Nvidia and Lenovo are deploying GPU-based AI systems.How to choose an edge gateway “If we have learned anything over the last two years, the ability to quickly adapt to rapidly changing conditions is critical to business success. Organizations investing in edge computing combined with AI and modern application design will have an advantage when it comes to tackling whatever challenge comes next,” according to Dave McCarthy, research vice president for Cloud and Edge Infrastructure Services at IDC.To read this article in full, please click here

Edge computing in 2022: Double-digit growth

Worldwide spending on edge computing is expected to reach $176 billion in 2022, an increase of 14.8% over last year, according to new figures from analyst IDC.Edge computing started out rather modest in its use cases but has quickly expanded across industries and scope. Five years ago an edge network was a few mid-range servers in a ruggedized container. Now Nvidia and Lenovo are deploying GPU-based AI systems.How to choose an edge gateway “If we have learned anything over the last two years, the ability to quickly adapt to rapidly changing conditions is critical to business success. Organizations investing in edge computing combined with AI and modern application design will have an advantage when it comes to tackling whatever challenge comes next,” according to Dave McCarthy, research vice president for Cloud and Edge Infrastructure Services at IDC.To read this article in full, please click here

New Cisco switch brings more networking features to the edge

Cisco is expanding its Catalyst family of switches for enterprises that need to blend industrial and operational technology (OT) systemsThe the ruggedized Catalyst Industrial Ethernet 9300 1RU rack-mountable switch is based on the same programmable Unified Access Data Plane (UADP) ASIC found in other Catalyst 9000 and features 28 Gigabit Ethernet ports. Up to eight of the units can be stacked together and managed as one system.SD-WAN buyers guide: Key questions to ask vendors The 9300 runs the same IOS XE operating system as other Catalyst boxes and can be centrally  controlled via DNA Center, Cisco’s principal networking-control platform that features myriad services from analytics, network management, and automation capabilities to assurance setting, fabric provisioning, and policy-based segmentation.To read this article in full, please click here

Cisco blends enterprise and industrial edge with new Catalyst switch

Cisco is expanding its Catalyst family of switches for enterprises that need to blend industrial and operational technology (OT) systemsThe the ruggedized Catalyst Industrial Ethernet 9300 1RU rack-mountable switch is based on the same programmable Unified Access Data Plane (UADP) ASIC found in other Catalyst 9000 and features 28 Gigabit Ethernet ports. Up to eight of the units can be stacked together and managed as one system.SD-WAN buyers guide: Key questions to ask vendors The 9300 runs the same IOS XE operating system as other Catalyst boxes and can be centrally  controlled via DNA Center, Cisco’s principal networking-control platform that features myriad services from analytics, network management, and automation capabilities to assurance setting, fabric provisioning, and policy-based segmentation.To read this article in full, please click here

Cisco chases quantum tech

When it comes to hardcore quantum computing players Cisco might not be the first company you think of, but that could change a lot in 2022 and beyond.For starters, the company is investing in photonics development, which will enable quantum communications as well as other hardware and software technologies for quantum computing, networking, and cryptography. Researchers show quantum computers can reason Developing quantum technologies was also one of the top predictions on the 2022 predictions list of Cisco’s executive vice president, general manager and Chief Strategy Officer Liz Centoni. To read this article in full, please click here

Cisco chases quantum tech

When it comes to hardcore quantum computing players Cisco might not be the first company you think of, but that could change a lot in 2022 and beyond.For starters, the company is investing in photonics development, which will enable quantum communications as well as other hardware and software technologies for quantum computing, networking, and cryptography. Researchers show quantum computers can reason Developing quantum technologies was also one of the top predictions on the 2022 predictions list of Cisco’s executive vice president, general manager and Chief Strategy Officer Liz Centoni. To read this article in full, please click here