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15%
Protect Your Servers with Nmap
23.07.2012
Home »  Articles  » 
 
.13.134.52):            Not shown: 994 filtered ports            PORT    STATE  SERVICE VERSION            22/tcp  open   ssh     OpenSSH 4.3 (protocol 2.0)            25/tcp  closed smtp            53/tcp  open   domain  ISC BIND 9.3
15%
Tuning loops – from loop unrolling to Duff's device
28.07.2025
Home »  Archive  »  2025  »  Issue 88: 5 Net...  » 
compiler (20.1.0 for ARM v8, -O3 compiler option) still outputs four separate fused multiply-add (fmadd) CPU instructions (Figure 1) instead of unrolling fourfold into a vectorized instruction. Listing
15%
SSHFS for Shared Storage
15.09.2020
Home »  HPC  »  Articles  » 
} (default: yes ) -o cache_timeout=N – sets timeout for caches in seconds (default: 20 ) -o cache_X_timeout=N – sets timeout for {stat ,dir ,link } caches -o compression=BOOL – enables data
15%
Monitoring network computers with the Icinga Nagios fork
17.06.2011
Home »  Archive  »  2010  »  Issue 1: System...  » 
 
_name Server at language center address 141.20.108.124 active_checks_enabled 1 passive_checks_enabled 0 max_check_attempts 3 check
15%
Load Testing the Cloud
20.02.2012
Home »  CloudAge  »  Blogs  »  Dan Frost's Blog  » 
 
on five hits on the web stack (assuming you pushed all static assets to S3 or something static), the probability that each user is affected by a 1 percent failure rate (i.e., 100 percent minus availability
15%
Getting the most from your cores
11.10.2016
Home »  Archive  »  2016  »  Issue 35: Persi...  » 
Lead Image © ktsdesign, 123RF.com
straightforward. If a processor was operating at a fixed frequency of 2.0GHz, CPU utilization was the percentage of time the processor spent doing work. (Not doing work is idle time.) For 50% utilization
15%
Application-aware batch scheduler
26.03.2025
Home »  Archive  »  2025  »  Issue 86: Data...  » 
Photo by Toby Elliott on Unsplash
: curl -LO https://raw.githubusercontent.com/datadoc24/admin-volcano-article/refs/heads/main/single-pod-wordcount-job/wordcount-pod.yaml for n in $(seq 1 20);do i=$n envsubst < wordcount-pod.yaml | kubectl
15%
Five multipurpose thin clients compared
12.09.2013
Home »  Archive  »  2013  »  Issue 16: Docker  » 
Lead Image © David Grigg, 123RF.com
.0(2) 4x USB 2.0, 2x USB 3.0 4x USB 2.0 PS/2 1x 1x 2x Optional No Serial No Optional via Connectivity Foot 2x Optional
15%
Measuring the performance of code
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Lucy Baldwin, 123RF.com
in the standard Python built-ins [2] and in the NumPy library [3]. Figure 1: IPython session comparing two implementations of a round routine. Unless you
15%
Setting up FreeNAS
17.02.2015
Home »  Archive  »  2015  »  Issue 25: Safe...  » 
Lead Image © Franck, 123RF.com
NAS Early versions of FreeNAS originate from the embedded firewall project m0n0wall, and the software has since undergone a complete metamorphosis. The current version is built on powerful open source

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