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10%
Tuning your filesystem's cache
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
for the kernel all along. The disk page cache uses memory pages in RAM to access rapidly data stored in disk blocks, with the kernel using "temporal locality" as the organizing principle to determine what ... 7
10%
RADOS and Ceph: Part 2
22.10.2012
Home »  HPC  »  Articles  » 
, data , and rbd are available in the default configuration. A list of existing pools can be called up with rados lspools (Figure 1). Figure 1: Listing
10%
Spanning Tree Protocol
21.08.2014
Home »  Archive  »  2014  »  Issue 22: OpenS...  » 
quickly via another switch port; again inactive (Blocked). In addition to these roles, a port can inhabit four states: Blocking, Listening, Learning, and Forwarding. The additional Disabled state calls
10%
Sovereign Cloud Stack – a genuine alternative for Europe
05.08.2024
Home »  Archive  »  2024  »  Issue 82: Sover...  » 
Lead Image © solerf, 123RF.com
Container Layer" and "Federation" boxes); companies were invited to develop concepts and contribute their expertise to the project. Contracts for the major blocks – IaaS, KaaS, IAM, and OpsTooling – were
10%
Grafana and Prometheus customized dashboards
25.03.2021
Home »  Archive  »  2021  »  Issue 62: Lean...  » 
Photo by Wynand van Poortvliet on unsplash
version, depending on your needs. The simple command to fire up the latest version is: $ docker run -d -p 3000:3000 grafana/grafana 3fa2f72de6bc4fd61a0cecdb1d18a8bf1aaf7b71b49f731fe4ae6eaab841d3fd If you
10%
Defining measures
07.04.2022
Home »  Archive  »  2022  »  Issue 68: Autom...  » 
Photo by Lars Kienle on Unsplash
overlooked aspect of measuring IOPS is whether the I/O operations are sequential or random. With sequential IOPS, the I/O operations happen with sequential blocks of data. For example, block 233 is used
10%
Linux filesystem performance tested
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© nyul, 123rf.com
, and correspondingly with little protection against data loss if worst comes to worst. ext3: The long-term standard in many distributions. ext4: The latest ext standard since kernel 2.6.28. Btrfs: The newcomer
9%
Checking your endpoints with Stethoscope
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Ewa Walicka, fotolia.com
breach. Infos Introducing Stethoscope: https://netflixtechblog.com/introducing-netflix-stethoscope-5f3c392368e3 Jamf: https://www.jamf.com LANDESK: https
9%
Dispatches from the world of IT
14.03.2013
Home »  Archive  »  2013  »  Issue 13: IPv6...  » 
European Cybercrime Center The European Commission has established a European Cybercrime Centre (EC3) at Europol. According to the announcement, the EC3 will be the focal point in the EU's fight
9%
Forensic analysis with Autopsy and Sleuth Kit
02.08.2021
Home »  Archive  »  2021  »  Issue 64: Bare...  » 
Lead Image © Tomasz Pacyna, 123RF.com
, or image data and detect so-called indicators of compromise. In this article, I introduce you to the Autopsy Sleuth Kit tool and show you how to use it for forensic analyses. After immediately provisioning

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