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48%
Energy efficiency in the data center
03.08.2023
Home »  Archive  »  2023  »  Issue 76: Energ...  » 
Photo by Ussama Azam on Unsplash
7236f7b5c3dd2f75672c3d2b8dfd4df3a3eea6-silicon-heatwave-the-looming-change-in-data-center-climates.pdf Tape storage and carbon emissions: https://www.backupworks.com/tape-storage-reduce-energy-consumption-and-carbon-emissions.aspx
48%
Getting the most from your cores
11.10.2016
Home »  Archive  »  2016  »  Issue 35: Persi...  » 
Lead Image © ktsdesign, 123RF.com
for i in range(N): 61 A = column(cpu_percent, i); 62 plt.plot(epoch_list, A); 63 # end if 64 plt.xlabel('Time (seconds)'); 65 plt.ylabel('CPU Percentage'); 66 plt
48%
Operating systems for the cloud and containers
14.08.2017
Home »  Archive  »  2017  »  Issue 40: Lean...  » 
Lead Image © leeavison, 123RF.com
to manage them disappeared. Container Linux ruthlessly replaces the entire /usr directory instead of individual files (Figure 3). The main work is handled by Linux containers à la Docker [20], or Rkt [21
48%
SHA-3 – The New Hash Standard
15.04.2013
Home »  Articles  » 
 
of researchers presented an attack against MD5 signatures at 25C3, the Chaos Computer Club’s annual congress. This attack allowed them to create a spoofed root certificate on an SSL certificate authority ... SHA-3 – The New Hash Standard
48%
Extending OpenNebula with hooks
09.01.2013
Home »  Archive  »  2013  »  Issue 18: New W...  » 
Lead Image © Greg Epperson, Photocase.com
. The on parameter defines the event to which OpenNebula responds (Listing 1, lines 3 and 9). The command entries specify the script to be called; arguments defines a string containing its call parameters
48%
Process, Network, and Disk Metrics
26.02.2014
Home »  HPC  »  Articles  » 
 def    # # Routine to add commas to a float string # def commify3(amount):     amount = str(amount)     amount = amount[::-1]     amount = re.sub(r"(\d\d\d)(?=\d)(?!\d*\.)", r"\1,", amount)     return amount[::-1
48%
Getting started with Prometheus
28.11.2021
Home »  Archive  »  2021  »  Issue 66: Inci...  » 
Photo by Clay LeConey on Unsplash
. As the name suggests, PromQL is a query language that can be employed to extract information from the Prometheus TSDB. A common structure is the use of a metric name (a value) together with one or more labels
48%
Linux Writecache
19.11.2019
Home »  HPC  »  Articles  » 
that the conversion took effect: $ sudo lvs -a vg-cache -o devices,segtype,lvattr,name,vgname,origin   Devices          Type       Attr       LV              VG       Origin   /dev/nvme0n1(0)  linear     Cwi-aoC
48%
Sharding and scale-out for databases
28.11.2023
Home »  Archive  »  2023  »  Issue 78: Domai...  » 
Photo by Dan Dennis on Unsplash
is minimal. Even with ShardingSphere-Proxy, which according to the developers is significantly slower than the JDBC option, the performance overhead is now 25 percent less (Figure 3). This performance may
48%
Many Clouds, One API
22.08.2011
Home »  Articles  » 
 
.keys.sort.each do |s| 14 printf "%20s %d\n", s, summary[s] 15 end 16 puts "Polling for changes (Ctrl-C to end)" 17 loop do 18 sleep 2 19 client.instances.each do |inst| 20 if state[inst.id] != inst.state 21

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