Issue 21: Managing Memory

As system administrators, you're often called upon to advise business leaders on your company's technology pathways. The newest dilemma to grab our too-short attention spans is whether to entertain a Windows 8.x upgrade, to stay with Windows 7 until January 2020, or to exercise our right to downgrade from Windows 8 to an older operating system. That's right, downgrade.

The 64-bit server install image on this month's CD is for computers with the AMD64 or EM64T architecture (e.g., Athlon64, Opteron, EM64T Xeon, Core 2). Ubuntu Server emphasizes scale-out computing, whether you are administering an OpenStack cloud, a Hadoop cluster, or a massive render farm.

Even Linux systems with large amounts of main memory are not protected against bottlenecks and potentially drastic performance degradation because of memory shortage. In this article, we investigate the complex causes and test potential solutions.

We show you how to dig deep to find hidden and covert processes, clandestine communications, and signs of misconduct on your network.

Want to set up a full-fledged web, file, or proxy server in 10 seconds? No problem with TheSSS, the smallest server suite in the world. The new 8.0 version of this useful Linux distribution weighs in at a mere 30MB.

Modern enterprises require powerful ERP and CRM solutions to manage processes, but the high cost of proprietary solutions can be prohibitive. We look at some open source options.

Google Compute Engine removes the technical and financial headaches of maintaining server, networking, and storage.

Centralized user management with LDAP or Active Directory is the standard today, although many prefer to manage user data manually rather than build this kind of infrastructure. In this article, we look at a better approach with OpenLDAP.

Open standards and open source are requisite in Kolab groupware. The alpha release of version 3.1 hugely extended the number of compatible clients with the CalDAV and CardDAV protocols, making Kolab data available on iOS and Mac OS  X and in Thunderbird and Evolution.

Users who lose interest in websites that don't respond in the expected time take their clicks elsewhere. We look at ways to improve your WordPress website performance.