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55%
Reading and understanding database execution plans
31.10.2025
Home »  Archive  »  2012  »  Issue 12: NAS S...  » 
© Gunnar Pippel, 123RF.com
"."EUR_VALUE">=10) 26 3 - access<+>6<+>( "S"."SALE_DATE">TRUNC(SYSDATE@!) 27 -INTERVAL'+00-06' YEAR(2) TO MONTH) 1  The explain plan for command only stores the execution plan in the PLAN_TABLE. 2  The DBMS
54%
ARP cache poisoning and packet sniffing
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© elisanth, 123RF.com
traffic normally unavailable because of layer 2 switching. Arpspoof [3] is much simpler than ettercap for redirecting packets: # arpspoof -i eth0 -t host Specifying the interface is optional ... 6
54%
One metric to rule them all
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
of how many cores a system has because that will alter the system's reaction to load changes. Using stress [6], you can create purely CPU-bound tasks to target a specific system load: stress --cpu 3
54%
Updating Small Business Server 2008
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Petra Wanzki, Fotolia
for Windows SharePoint 3.0 [6]. Again, make sure that you choose the correct installation file (i.e., the 64-bit version). The Microsoft Support website [7] has information on the changes. To run the installer
54%
The RADOS object store and Ceph filesystem: Part 2
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Kateryna Pruchkovska, 123RF.com
: The elements of the RADOS universe, whose interaction is controlled by the Crush map. The Crush map got its name from the algorithm it uses: Controlled Replication under Scalable Hashing [3]. The algorithm
54%
Configuration management with Chef
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Alistair Cotton, 123RF.com
-certs, make, gcc, and g++. The certificates from ssl-cert will be required later. According to the how-to http://1, Chef prefers RubyGems version 1.3.6 or newer, but not 1.3.7. This version contains a bug
54%
A swap space primer
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
usually require swap to be an exceptional circumstance. Table 1 lists swap recommendations for Red Hat Enterprise Linux Server 6; Ubuntu server's own guidelines [3] are more conservative, illustrating how
54%
Galera Cluster for MySQL
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Noel Powell, fotolia.com
.168.56.103:3306:1 Incoming address: 127.0.0.1:3306 , control FIFO: /tmp/glbd.fifo Control address: 127.0.0.1:4444 Number of threads: 6, source tracking: OFF, verbose: OFF, daemon: YES Destinations: 3 0
54%
30.11.2025
Home »  Archive  »  2011  »  Issue 4: Secure...  » 
© 2011 PR NEWSWIRE
't out yet, but the company promises 3G/4G connectivity, "full shift" battery life, satellite-based GPS, and professional-grade accessories. Although the workplace usability for tablets is obvious
54%
Beyond monitoring: Mathematical load simulation in Perl
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© kudryashka, 123RF.com
source queuing analysis tool, which I co-maintain with Peter Harding [3]. Why Queues? Buffers and stacks are ubiquitous forms of storage in computer systems and communication networks. A buffer is a type ... 6

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