Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Potential pitfalls with multi-NIC and cloud-netconfig

Most SUSE images in AWS and Azure come with a system called cloud-netconfig pre-installed. The cloud-netconfig implementation handles automatic configuration of network interfaces in those Public Cloud frameworks. See https://www.suse.com/c/multi-nic-cloud-netconfig-ec2-azure/ for the initial announcement of cloud-netconfig and details on what it does. Multi-NIC and routing policies...

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[$] Developers split over split-lock detection

A “split lock” is a low-level memory-bus lock taken by the processor for a memory range that crosses a cache line. Most processors disallow split locks, but x86 implements them, Split locking may be convenient for developers, but it comes at a cost: a single split-locked...

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Introducing the Ubuntu AWS Rolling Kernel

The linux-aws 4.15 based kernel, which is the default kernel in the Ubuntu 18.04 LTS AMIs, is moving to a rolling kernel model. Why is this changing? The Ubuntu rolling kernel model provides the latest upstream bug fixes and performance improvements around task scheduling, I/O scheduling,...

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