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13%
Security data analytics and visualization with R
05.12.2014
Home »  Archive  »  2014  »  Issue 24: Visua...  » 
Lead Image © Rancz Andrei, 123RF.com
(HostCt, ServerOwner, Date) %>% 106 arrange(desc(HostCt)) 107 head12 <- head(top12, 25) 108 109 mergedTop25 <- rbind(head1,head2,head3,head4,head5, head6,head7,head8,head9,head10,head11,head12) 110 111
13%
Comparing startup times of Linux distros in the cloud
27.09.2021
Home »  Archive  »  2021  »  Issue 65: 7 Em...  » 
Lead Image © Lucy Baldwin, 123RF.com
not vary with distribution, and Colin himself has published [6] data indicating an average of 1.5 and 6.9 seconds, respectively; however, these numbers may vary with AWS region, availability zone
13%
Set up subdomains with Apache and Nginx
25.03.2021
Home »  Archive  »  2021  »  Issue 62: Lean...  » 
Lead Image © Saniphoto, Fotolia.com
) and Apache (with VirtualHost blocks). The starting point will be a freshly installed Debian 10.6 "Stable," on which I configure virtual hosts for the imaginary domains www.example1.de and www.example2.de
13%
Measuring the performance of code
04.08.2020
Home »  Archive  »  2020  »  Issue 58: Graph...  » 
Lead Image © Lucy Baldwin, 123RF.com
, repeating the measurement 100,000 times leads to an approximate time measurement of 6ns for the round n Figure 4: Bench testing round() in C: 6.23ns fast
13%
Look for Bottlenecks with Open|SpeedShop
21.12.2011
Home »  HPC  »  Articles  » 
_start_main (libmonitor.so.0.0.0) openss>>expview -vstatements Exclusive  Inclusive       % of   Statement Location (Line Number) Fpe Event  Fpe Event       Total Counts     Counts          Counts 12         12
13%
Protecting your web application infrastructure with the Nginx Naxsi firewall
18.07.2013
Home »  Archive  »  2013  »  Issue 15: What’...  » 
Pansiri Pikunkaew, 123RF
] 03 04 enabled = true 05 port = http,https 06 filter = naxsi 07 logpath = /var/log/nginx/error.log 08 maxretry = 6 09 banaction = iptables-multiport-log 10 action = %(action_mwl)s 11 12 # filter
13%
Embarrassingly parallel computation
01.06.2024
Home »  Archive  »  2024  »  Issue 81: Load...  » 
Lead Image © Lucy Baldwin, 123RF.com
Laboratory hosts a number of excellent parallel programming tutorials at its Leadership Computing Facility, including one demonstrating the Monte Carlo method in both serial and parallel implementations [6]. I
13%
Parallel Shells: Run Commands on Multiple Nodes
02.07.2014
Home »  HPC  »  Articles  » 
to do on a single node can be done on a large number of nodes using a parallel shell tool. If you try to use a parallel shell on a 50,000-node cluster, however, the time skew could be large enough
13%
We compare four popular NAS appliances
05.12.2014
Home »  Archive  »  2014  »  Issue 24: Visua...  » 
Lead Image © Alejandro Mendoza, 123RF.com
  Model TS-251 DS-214 N5550 ReadyNAS RN31400 Manufacturer QNAP Inc. Synology Thecus Netgear Operating System QTS 4.1.1 (Linux 3.12.6
13%
Filesystem Murder Mystery
09.04.2019
Home »  Archive  »  2019  »  Issue 50: Bpfilter  » 
Lead Image © Lucy Baldwin, 123RF.com
-provisioned, and network-based , as delivered by the Elastic Block Storage service (EBS). EBS volumes are highly available and come with a multitude of options too large to detail here [6]. In broad strokes, EBS volumes

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