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Data Analysis with R and Python
17.02.2015
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Lead Image © mopic, 123RF.com
vectors with 100,000 equally distributed random numbers from the interval 0.5 to 65 each, which round() then rounds to 1 and 6. Each vector component simulates a throw of the dice. The call to hist
22%
Exploring OpenShift – Red Hat's next-generation PaaS tool
10.04.2015
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(C) Markus Feilner, CC-BY-SA 4.0
> \ jboss-dv-6.0.0 35 JBoss Enterprise Application Platform 6 rhc create-app \ jbosseap-6 36 JBoss Unified Push Server 1.0.0.Beta1 rhc create
22%
Look for Bottlenecks with Open|SpeedShop
21.12.2011
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. Actual CPU time at the source line, machine instruction, and function levels by sampling the program counter at 100 samples per second.  usertime Slow program, nothing else known. May
22%
Understanding the Spanning Tree protocol family
17.06.2017
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Lead Image © Joellen Armstrong, Fotolia.com
10 root primary SW2(config)#spanning-tree vlan 20 root primary SW3(config)#interface fastEthernet 0/1 SW3(config-if)#spanning-tree vlan 20 cost 999 SW3(config-if)#interface fastEthernet 0/2 SW3(config
22%
Creating load for fun and profit
22.05.2023
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Lead Image © Lucy Baldwin, 123RF.com
to maxing out a core with 100 percent load. For example, stress-ng -t 1m -c 0 -l 40 will burden all cores in the system (-c 0) with a 40 percent load (Figure 4). Loading all cores to 40 percent is something
22%
System temperature as a dimension  of  performance
28.11.2022
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Lead Image © Lucy Baldwin, 123RF.com
of alternative sources. Listing 1 sensors Output federico@ferenginar:~$ sensors k10temp-pci-00c3 Adapter: PCI adapter temp1: +42.5¡C (high = +70.0¡C) (crit = +100.0¡C
22%
Scalable mail storage with Dovecot and Amazon S3
10.04.2015
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Lead Image © Vlad Kochelaevskiy, Fotolia.com
to send their 20MB PowerPoint presentations by email. Moreover, the number of email users is still growing steadily, and the amount of data stored by all of a provider's users is growing proportionally
22%
OpenMP – Parallelizing Loops
03.04.2019
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code by writing parallel code as much as possible. Why run 100,000+ serial jobs on an Exascale machine? You can accomplish this with cloud computing. OpenMP is one of the programming technologies
22%
HTTP/1.1 versus HTTP/2 and HTTP/3
30.05.2021
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Lead Image © alphaspirit, 123RF.com
by the image with the previously announced size of 32,768 bytes. Listing 1 Opening a Page GET /trainings HTTP/1.1 Host: www.it-administrator.de User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64
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From debugging to exploiting
17.02.2015
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Lead Image © Maksim Kabou, 123RF.com
can refer to the entire process environment by means of the **environ variable; therefore: (gdb) p &environ $4 = ( *) 0xf7f83d64 (gdb) x/100s *environ 0xffffc815

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