In this blog posting, Oracle Linux kernel engineer Khalid Aziz talks about the work that he has done in the area of proactive and adaptive free memory management.IntroductionThe Linux kernel organizes physical memory in units of pages of a certain size called base pages. For example, the default base page size when running on Intel processors is 4KB. These pages are allocated to user…
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This blog introduces a project, memoptimizer that uses a mathematical forecasting technique to identify imminent memory exhaustion with a view to averting it by preemptive memory reclamation. The objective is to reduce stalls even under high rates of memory consumption and avoid compaction or page reclamation until absolutely necessary.
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Oracle Linux kernel engineer Dai Ngo provides an introduction on how to analyse a live Oracle Linux system using SystemTap.IntroductionThere are a wealth of tools available for tracing and debugging the Linux kernel on a live system. These include Kprobes, Ftrace, trace-cmd, Dtrace, eBPF, SystemTap, crash, gdb, etc. Among these tools, few allow the user to develop and re-use scripts that can filter events and…
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A number of tools exist that facilitate tracing and debugging a live Linux system. This blog describes how to use one of them, SystemTap, and how one might analyse a live Oracle Linux system using SystemTap.
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Brian Behlendorf is one of the most respected luminaries of the open-source world. He has been heading the Linux Foundation’s Hyperledger project since its inception and recently took over additional responsibilities of the Linux Foundation Public Health. With the new administration sworn in, there will be an increased focus on science-backed public health efforts, and the foundation is best positioned to help the public sector with the strategic availability of open-source technologies to tackle serious health crises. In this interview, we dived deep into the scope of the Linux Foundation Public Health project. It’s going to look beyond the COVID-19 pandemic and address many other public health issues that we may see due to climate change and so on.
Becoming a Linux system administrator: From sales to sysadmin
A look back at my journey to becoming a sysadmin—from sales to consulting to developer to sysadmin.
Joachim Haller
Fri, 1/22/2021 at 8:35pm
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Photo by 39422Studio from Pexels
In the early 80s, I was working as a salesman in the construction industry. Roofing and insulation had me traveling across Sweden presenting solutions and promoting various materials. Being out on the road was great, and no two days were alike. When I passed a construction site where our crew was working, they would always invite me, and I could pick up tips on new customers or just relax and chat and have a cup of coffee. I was young, free, and endlessly curious.
Topics:
Linux
Linux Administration
Career
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Set the hostname on your Linux systems by using the hostnamectl command.
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If you’re heading to a sysadmin job interview, here are 5 questions to ask.
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How to replay terminal sessions recorded with the Linux script command
Playback those recorded terminal sessions with the scriptreplay command.
khess
Thu, 1/21/2021 at 2:41pm
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Photo by cottonbro from Pexels
In my previous article, How to capture terminal sessions and output with the Linux script command, covering the script command and some common options, you learned how to record your interactive terminal sessions. This follow-up article demonstrates how to replay those recorded terminal sessions.
Topics:
Linux
Command line utilities
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Quick start guide to Ansible for Linux sysadmins
In this second article, you’ll explore the how-to of Ansible installation.
Pratheek Prabhakaran
Thu, 1/21/2021 at 2:15pm
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Photo by eberhard grossgasteiger from Pexels
In this article, I discuss the prerequisites for installing Ansible, Ansible installation using the Satellite server, setting up Ansible for automation, introduction to playbooks, inventory files, and go through a use case for Ansible. Check out the first article, Demystifying Ansible for Linux sysadmins, if you have not already.
Topics:
Linux
Linux Administration
Ansible
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