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26%
Get the best out of your bandwidth with tc
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Russell Shively, 123RF.com
bandwidth measurements as follows: Kilobytes are written as k or kb. Megabytes are written as m or mb. However, I'm more comfortable using kilobits and megabits. These terms are notated
26%
Expand your sphere with a piece of Google
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© artida, 123RF.com
SQL. You can just upload your web application and enjoy the ride. Keep in mind that Google imposes limits to this freefest. Their hospitality is limited to 500MB of disk space and traffic volume of 1GB per
26%
Monitor your nodes with collectl
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© nobeastsofierce, 123RF.com
with a similar noarch RPM or from source. Be sure to watch for the RPM dependencies – in particular, the tool called ColPlot [5] uses Apache (web server) and gnuplot [6] to plot the results. To start, I'll assume
26%
Tracing applications with OProfile and SystemTap
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© boing, Photocase.com
confirm that the kernel and kernel-debuginfo packages have the same version number: rpm -q kernel-PAE kernel-PAE-debuginfo oprofilekernel-PAE-2.6.32.10-90.fc12.i686 kernel-PAE-debuginfo-2.6.32.10-90.fc12.i
25%
Managing Linux systems with Spacewalk
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© patrimonio designs, Fotolia.com
can be installed on Red Hat Enterprise (RHEL) [3], Fedora [4], or CentOS [3] Linux. Note that Spacewalk does need a current Java Runtime Version 1.6.0 or newer. You can use the Open JDK for this; Fedora
25%
Performance testing monitoring solutions
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Kheng Ho Toh, 123RF.com
were run on a virtual system (using ESX as the hypervisor) with fixed reservations for CPU and memory. To be more precise, I used a virtual CPU running at 1.5GHz and with 512MB of RAM in the virtual
25%
Monitoring network computers with the Icinga Nagios fork
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Alterfalter, 123RF.com
check_interval 5 12 retry_interval 1 13 contacts spz_admin 14 notification_period 24x7 15
25%
Virtualization with KVM
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
several more virtual machines or assign more memory to the existing machines. Luckily, KVM became an official component of all Linux kernels as of version 2.6.20. In other words, you only need to install
25%
pfSense firewall and router distribution
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
© Sergey Mironov, 123RF.com
access point, a DNS server, and even a WLAN access point. Despite all this, the complete system weighs in at just 100MB, and to get started, you just need a USB stick and 128MB of RAM. If the built
25%
Network backup with Burp, Obnam, and Backshift
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Sergey Peterman, 123RF.com
version (1.3.0) dates back to January of this year, whereas the current version (1.3.6) was released at the end of May. The associated Windows client is available in the form of an installer file for 32

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